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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">AS FILED WITH THE SECURITIES AND
EXCHANGE COMMISSION ON MAY 12, 2006</font></b></p>

<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Registration No. 333-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font></b></p>

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<p style="border:none;margin:0in 0in .0001pt;padding:0in;"><font size="5" face="Times New Roman" style="font-size:18.0pt;">&nbsp;</font></p>

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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">SECURITIES AND EXCHANGE
COMMISSION</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Washington,
D.C. 20549</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div align="center" style="margin:0in 0in .0001pt;text-align:center;"><hr size="1" width="25%" noshade color="black" align="center"></div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">FORM S-8</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">REGISTRATION STATEMENT<br>
UNDER<br>
THE SECURITIES ACT OF 1933</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div align="center" style="margin:0in 0in .0001pt;text-align:center;"><hr size="1" width="25%" noshade color="black" align="center"></div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">RENTECH, INC.</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Exact
name of Registrant as specified in its charter)</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

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<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="50%" valign="top" style="padding:0in .7pt 0in .7pt;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Colorado</font></b></p>
  </td>
  <td width="50%" valign="top" style="padding:0in .7pt 0in .7pt;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">84-0957421</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="50%" valign="top" style="padding:0in .7pt 0in .7pt;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(State or other
  jurisdiction of incorporation or</font></p>
  </td>
  <td width="50%" valign="top" style="padding:0in .7pt 0in .7pt;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(I.R.S. Employer
  Identification No.)</font></p>
  </td>
 </tr>
 <tr>
  <td width="50%" valign="top" style="padding:0in .7pt 0in .7pt;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">organization)</font></p>
  </td>
  <td width="50%" valign="top" style="padding:0in .7pt 0in .7pt;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
</table>

</div>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">1331
17th Street, Suite 720</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Denver,
Colorado 80202-1557</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">(303)
298-8008</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Address
of principal executive offices)</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Rentech,
Inc. Stock Option Agreement with Patricia Butler, dated July 11, 2002</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Rentech,
Inc. Stock Option Agreement with Geoffrey S. Flagg, dated May 16, 2001</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Rentech,
Inc. Stock Option Agreement with Jim D. Fletcher, dated July 11, 2002</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Rentech,
Inc. Stock Option Agreement with Carol Florcyk, dated July 11, 2002</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Rentech,
Inc. Stock Option Agreement with Mark D. Ibsen, dated May 16, 2001</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Rentech,
Inc. Stock Option Agreement with Mark D. Ibsen, dated July 11, 2002</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Rentech,
Inc. Stock Option Agreement with Debra L. McCormick, dated July 11, 2002</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Rentech,
Inc. Stock Option Agreement with Peter S. Pedersen, dated May 16, 2001</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Rentech,
Inc. Stock Option Agreement with Peter S. Pedersen, dated July 11, 2002</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Rentech,
Inc. Stock Option Agreement with Richard Ridley, dated July 11, 2002</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Rentech,
Inc. Stock Option Agreement with Richard Sheppard, dated May 16, 2001</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Rentech,
Inc. Stock Option Agreement with Richard Sheppard, dated July 11, 2002</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Rentech,
Inc. Stock Option Agreement with James E. Siebarth, dated July 11, 2002</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Rentech,
Inc. Stock Option Agreement with W. Earl Somerville, dated May 16, 2001</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Rentech,
Inc. Stock Option Agreement (1) with W. Earl Somerville, dated July 11, 2002</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Rentech,
Inc. Stock Option Agreement (2) with W. Earl Somerville, dated July 11, 2002</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Rentech,
Inc. Stock Option Agreement with Peter J. Tijm, dated May 16, 2001</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Full
title of the Plan)</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">D.
Hunt Ramsbottom</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">President
and Chief Executive Officer</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Rentech,
Inc.</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">1331
17th St. Suite 720</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Denver,
Colorado&#160; 80202-1557</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Name
and address of agent for service)</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">(303)
298-8008</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Telephone
number, including area code, of agent for service)</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">CALCULATION
OF REGISTRATION FEE</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="99%" style="border-collapse:collapse;width:99.98%;">
 <tr>
  <td width="32%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:32.98%;">
  <p style="margin:0in 0in .0001pt 10.0pt;text-indent:-10.0pt;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Title&nbsp;of&nbsp;Securities&nbsp;to&nbsp;be&nbsp;Registered</font></b></p>
  </td>
  <td width="0%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:.54%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="11%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:11.32%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Amount&nbsp;to&nbsp;be<br>
  Registered</font></b></p>
  </td>
  <td width="0%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:.9%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="16%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:16.5%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Proposed&nbsp;Maximum<br>
  Offering<br>
  Price&nbsp;Per&nbsp;Share</font></b></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.62%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="16%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:16.5%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Proposed&nbsp;Maximum<br>
  Aggregate&nbsp;Offering<br>
  Price</font></b></p>
  </td>
  <td width="0%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:.9%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="15%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:15.84%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Amount&nbsp;of<br>
  Registration<br>
  Fee</font></b></p>
  </td>
  <td width="0%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:.9%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="32%" valign="top" bgcolor="#CCEEFF" style="background:#CCEEFF;border:none;padding:0in .7pt 0in .7pt;width:32.98%;">
  <p style="margin:0in 0in .0001pt 10.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Common Stock, par value $0.01 per share, to be issued under the above-captioned
  plans </font></p>
  </td>
  <td width="0%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in .7pt 0in .7pt;width:.54%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="11%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;border:none;padding:0in .7pt 0in .7pt;width:11.32%;">
  <p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">338,000
  </font></p>
  </td>
  <td width="0%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in .7pt 0in .7pt;width:.9%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="16%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;border:none;padding:0in .7pt 0in .7pt;width:16.5%;">
  <p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">$&#151;</font></p>
  </td>
  <td width="3%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in .7pt 0in .7pt;width:3.62%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(1)&nbsp; </font></p>
  </td>
  <td width="16%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;border:none;padding:0in .7pt 0in .7pt;width:16.5%;">
  <p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">$215,580</font></p>
  </td>
  <td width="0%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in .7pt 0in .7pt;width:.9%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="15%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;border:none;padding:0in .7pt 0in .7pt;width:15.84%;">
  <p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">$</font><font size="2" style="font-size:10.0pt;">24</font></p>
  </td>
  <td width="0%" valign="bottom" bgcolor="#CCEEFF" style="background:#CCEEFF;padding:0in .7pt 0in .7pt;width:.9%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
</table>

<div style="margin:0in 0in .0001pt;"><hr size="1" width="25%" noshade color="black" align="left"></div>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(1)&#160;&#160;&#160;&#160;&#160;&#160;&#160; This
estimate is made pursuant to Rule 457(h) solely for purposes of calculating the
registration fee, and is determined based on the weighted average exercise
price of options outstanding under the above-captioned plans.</font></p>

<div style="border:none;border-bottom:double windowtext 6.0pt;padding:0in 0in 0in 0in;">

<p style="border:none;margin:0in 0in .0001pt;padding:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

</div>

<p style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></p>

<div align="left" style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-align:left;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="3" width="100%" noshade color="#010101" align="left">

</font></b></div>

</div>
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<div style="font-family:Times New Roman;">

<p style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">&nbsp;</font></b></p>

<p style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">PART I</font></b></p>

<p style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The information called for
in Part I of Form S-8 is not being filed with or included in this Registration
Statement on Form S-8 (by incorporation by reference or otherwise) in
accordance with the rules and regulations of the Securities and Exchange
Commission (the &#147;Commission&#148;).</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-weight:bold;margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-variant:normal !important;">PART II</font></b></p>

<p style="font-weight:bold;margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 3.&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Incorporation of Documents
by Reference.</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The following documents, which were filed
by the Registrant with the Securities and Exchange Commission (the &#147;Commission&#148;)
pursuant to Sections 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act
of 1934, as amended (the &#147;Exchange Act&#148;), are incorporated herein by reference:</font></p>

<p style="layout-grid-mode:char;margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt 1.0in;text-indent:-.5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&#149;</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Annual Report
on Form 10-K for the fiscal year ended September 30, 2005, as amended by
Amendment No. 1 on Form 10-K/A;</font></p>

<p style="margin:0in 0in .0001pt 1.0in;text-indent:-.5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&#149;</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Quarterly
Reports on Form 10-Q for the quarters ended December 31, 2005, and March 31,
2006;</font></p>

<p style="margin:0in 0in .0001pt 1.0in;text-indent:-.5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&#149;</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Current Reports
on Form 8-K filed on October 6, 2005, October 13, 2005, November 9, 2005,
November 10, 2005, November 16, 2005, November 18, 2005, December 12, 2005,
December 19, 2005, December 29, 2005, January 6, 2006, January 17, 2006,
January 19, 2006, January 26, 2006, January 27, 2006, February 14, 2006, </font><font size="2" style="font-size:10.0pt;">March 2, 2006</font><font size="2" style="font-size:10.0pt;">, March 14,
2006, April 3, 2006, April 4, 2006, April 10, 2006, April 14, 2006, April 18,
2006, April 19, 2006, April 24, 2006, April 27, 2006, May 2, 2006 and May 11,
2006 ;</font></p>

<p style="margin:0in 0in .0001pt 1.0in;text-indent:-.5in;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&#149;</font><font size="1" style="font-size:8.5pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">The description
of the Registrant&#146;s Common Stock contained in the Registrant&#146;s Registration
Statement on Form 8-A filed under Section 12(b) of the Securities Exchange Act
of 1934, as amended (the &#147;Exchange Act&#148;); and</font></p>

<p style="margin:0in 0in .0001pt 1.0in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">All documents subsequently
filed by the Registrant pursuant to Sections 13(a), 13(c), 14 and 15(d) of the
Exchange Act after the date of this Registration Statement, and prior to the
filing of a post-effective amendment which indicates that all securities
offered hereby have been sold or which deregisters all securities then
remaining unsold, shall be deemed to be incorporated by reference herein and to
be a part of this Registration Statement from the date of the filing of such
documents. &#160;Any statement contained in a
document incorporated or deemed to be incorporated by reference herein shall be
deemed to be modified or superseded for purposes of this Registration Statement
to the extent that a statement contained in this Registration Statement, or in
any other subsequently filed document which also is or is deemed to be
incorporated by reference in this Registration Statement, modifies or
supersedes such statement. &#160;Any such
statement so modified or superseded shall not be deemed, except as so modified
or superseded, to constitute a part of this Registration Statement.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 4.&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Description of Securities.</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Not Applicable.</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 5.&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Interests of Named Experts
and Counsel.</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The validity of the Common Stock
being registered pursuant to this Registration Statement will be passed upon
for the Registrant by Amanda M. Darby, General Counsel of the Registrant. &#160;Ms. Darby holds options to purchase up to
65,000 shares of the Registrant&#146;s Common Stock.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">Item 6. Indemnification of Directors and Officers.</font></b></p>

<p style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></p>

<p style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-indent:.5in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">Section 7-108-402 of the Colorado
Business Corporation Act provides, generally, that the articles of
incorporation of a Colorado corporation may contain a provision eliminating or
limiting the personal liability of a director to the corporation or its
shareholders for monetary damages for breach of fiduciary duty as a director;
except that any such provision may not eliminate or limit the liability of a
director for (i) any breach of the director&#146;s duty of loyalty to the
corporation or its shareholders, (ii) acts or omissions not in good faith or
which involve intentional misconduct or a knowing violation of law, (iii) acts
specified in Section 7-108-403 (concerning unlawful distributions), or (iv) any
transaction from which a director directly or indirectly derived an improper
personal benefit. &#160;The articles of
incorporation may not eliminate or limit the liability of a director for any
act or omission occurring prior to the date on which the provision becomes effective.
&#160;The Registrant&#146;s articles of
incorporation contain a provision eliminating liability as permitted by Section
7-108-402 of the Colorado Business Corporation Act. &#160;The Registrant&#146;s articles of incorporation
further provide that the Registrant&#146;s directors </font></b></p>

<p align="center" style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">&nbsp;</font></b></p>

<p align="center" style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">2</font></b></p>

<div style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">

<hr size="3" width="100%" noshade color="#010101" align="left">

</font></b></div>

</div>
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<br clear="all" style="page-break-before:always;">


<div>

<p align="center" style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">&nbsp;</font></b></p>

<p style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">and officers will not be held personally liable for
any injury to persons or property caused by the wrongful act of any of the
Registrant&#146;s employees unless either (i) the director or officer was personally
involved in the situation leading to the litigation or (ii) the director or officer
committed a criminal offense in connection with the litigation.</font></b></p>

<p style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-indent:.5in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></p>

<p style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-indent:.5in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">Section 7-109-103 of the Colorado
Business Corporation Act provides that a Colorado corporation must indemnify a
person (i) who is or was a director of the corporation or an individual who,
while serving as a director of the corporation, is or was serving at the
corporation&#146;s request as a director, officer, partner, trustee, employee or
fiduciary or agent of another corporation or other entity or of any employee
benefit plan (a &#147;Director&#148;) or officer of the corporation and (ii) who was
wholly successful, on the merits or otherwise, in defense of any threatened,
pending, or completed action, suit, or proceeding, whether civil, criminal,
administrative, or investigative and whether formal or informal (a &#147;Proceeding&#148;),
in which the Director was a party, against reasonable expenses incurred by him
or her in connection with the proceeding, unless such indemnity is limited by
the corporation&#146;s articles of incorporation. &#160;The Registrant&#146;s articles of incorporation do
not contain any such limitation.</font></b></p>

<p style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-indent:.5in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></p>

<p style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-indent:.5in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">Section 7-109-102 of the Colorado
Business Corporation Act provides, generally, that a Colorado corporation may
indemnify a person made a party to a Proceeding because the person is or was a
Director, against any obligation incurred with respect to a Proceeding, to pay
a judgment, settlement, penalty, fine (including an excise tax assessed with
respect to an employee benefit plan) or reasonable expenses incurred in the
proceeding if the Director conducted himself or herself in good faith and the
Director reasonably believed, in the case of conduct in an official capacity
with the corporation, that the Director&#146;s conduct was in the corporation&#146;s best
interests and, in all other cases, the Director&#146;s conduct was at least not
opposed to the corporation&#146;s best interests and, with respect to any criminal
proceedings, the Director had no reasonable cause to believe that his or her
conduct was unlawful. The Registrant&#146;s articles of incorporation provide for
such indemnification. A corporation may not indemnify a Director in connection
with any proceeding by or in the right of the corporation in which the Director
was adjudged liable to the corporation or, in connection with any other
proceeding charging the Director derived an improper personal benefit, whether
or not involving actions in an official capacity, in which proceeding the
Director was judged liable on the basis that he derived an improper personal
benefit. Any indemnification permitted in connection with a Proceeding by or in
the right of the corporation is limited to reasonable expenses incurred in
connection with the proceeding.</font></b></p>

<p align="center" style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></p>

<p style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-indent:.5in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">Under Section 7-109-107 of the Colorado
Business Corporation Act, unless otherwise provided in its articles of
incorporation, a Colorado corporation may indemnify an officer, employee,
fiduciary, or agent of the corporation to the same extent as a Director and may
indemnify any such non-Director to a greater extent, if not inconsistent with
public policy and if provided for by its bylaws, general or specific action of
its board of directors or shareholders or contract. &#160;The Registrant&#146;s articles of incorporation
allow indemnification of its officers, employees and agents to the same extent
as the Registrant&#146;s Directors.</font></b></p>

<p style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-indent:.5in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></p>

<p style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-indent:.5in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">Section 7-109-104 of the Colorado
Business Corporation Act authorizes a Colorado corporation to pay expenses
incurred in defending a proceeding in advance of the final disposition of the
Proceeding if the person undertakes in writing to repay the amount if it is
ultimately determined that the person did not meet the statutory standards of
conduct.</font></b></p>

<p style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-indent:.5in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></p>

<p style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-indent:.5in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">The Registrant has obtained
policies of directors&#146; and officers&#146; liability insurance. &#160;These policies insure the Registrant&#146;s
directors and officers against the costs of defense, settlement or payment of a
judgment under certain circumstances and subject to policy exclusions and
limitations.</font></b></p>

<p style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:auto;text-indent:.5in;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></p>

<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 7.&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Exemption from Registration
Claimed.</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Not Applicable.</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 8.&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Exhibits.</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The following is a list of
exhibits filed as part of this Registration Statement and incorporated herein:</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="9%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Exhibit<br>
  Number</font></b></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="86%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Description</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">5.1</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Opinion of Amanda M.
  Darby, General Counsel of Rentech, Inc.</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.1</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech,
  Inc. Stock Option Agreement with Patricia Butler, dated July 11, 2002</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.2</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech,
  Inc. Stock Option Agreement with Geoffrey S. Flagg, dated May 16, 2001</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.3</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech,
  Inc. Stock Option Agreement with Jim D. Fletcher, dated July 11, 2002</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.4</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech,
  Inc. Stock Option Agreement with Carol Florcyk, dated July 11, 2002</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.5</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech,
  Inc. Stock Option Agreement with Mark D. Ibsen, dated May 16, 2001</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.6</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech,
  Inc. Stock Option Agreement with Mark D. Ibsen, dated July 11, 2002</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.7</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech,
  Inc. Stock Option Agreement with Debra L. McCormick, dated July 11, 2002</font></p>
  </td>
 </tr>
</table>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3</font></p>

<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>

</div>
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<br clear="all" style="page-break-before:always;">


<div style="font-family:Times New Roman;">

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.8</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech,
  Inc. Stock Option Agreement with Peter S. Pedersen, dated May 16, 2001</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.9</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech,
  Inc. Stock Option Agreement with Peter S. Pedersen, dated July 11, 2002</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.10</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech,
  Inc. Stock Option Agreement with Richard Ridley, dated July 11, 2002</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.11</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech,
  Inc. Stock Option Agreement with Richard Sheppard, dated May 16, 2001</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.12</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech,
  Inc. Stock Option Agreement with Richard Sheppard, dated July 11, 2002</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.13</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech,
  Inc. Stock Option Agreement with James E. Siebarth, dated July 11, 2002</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.14</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech,
  Inc. Stock Option Agreement with W. Earl Somerville, dated May 16, 2001</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.15</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech,
  Inc. Stock Option Agreement (1) with W. Earl Somerville, dated July 11, 2002</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.16</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech,
  Inc. Stock Option Agreement (2) with W. Earl Somerville, dated July 11, 2002</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.17</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech,
  Inc. Stock Option Agreement with Peter J. Tijm, dated May 16, 2001</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">23.1</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Consent of Independent
  Registered Public Accounting Firm</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">23.2</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Consent of KPMG LLP</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">23.3</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Consent of Amanda M.
  Darby, General Counsel of Rentech, Inc. (included in Exhibit 5.1 hereto)</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">24.1</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Power of Attorney
  (included in the signature page hereto)</font></p>
  </td>
 </tr>
</table>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 9.&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Undertakings.</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(a)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; The undersigned Registrant hereby undertakes:</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(1)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; To file, during any period in which offers or sales are
being made, a post-effective amendment to this Registration Statement:</font></p>

<p style="margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:1.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(i)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; To include any prospectus required by Section 10(a)(3) of
the Securities Act;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-indent:0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:1.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(ii)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; To reflect in the prospectus any facts or events arising
after the effective date of this Registration Statement (or the most recent
post-effective amendment thereof) which, individually or in the aggregate,
represent a fundamental change in the information set forth in the Registration
Statement. Notwithstanding the foregoing, any increase or decrease in volume of
securities offered (if the total dollar value of securities offered would not
exceed that which was registered) and any deviation from the low or high end of
the estimated maximum offering range may be reflected in the form of prospectus
filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the
changes in volume and price represent no more than 20 percent change in the
maximum aggregate offering price set forth in the &#147;Calculation of Registration
Fee&#148; table in the effective Registration Statement;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:1.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:1.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(iii)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; To include any material information with respect to the
plan of distribution not previously disclosed in the Registration Statement or
any material change to such information in the Registration Statement;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:1.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-size:10.0pt;margin:0in 0in .0001pt;text-indent:1.0in;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">provided, however</font></i>, that paragraphs (a)(1)(i) and (a)(1)(ii) do
not apply if the information required to be included in a post-effective
amendment by those paragraphs is contained in periodic reports filed with or
furnished to the Commission by the Registrant pursuant to Section 13 or Section
15(d) of the Exchange Act that are incorporated by reference in this
Registration Statement.</p>

<p style="margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(2)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; That, for the purpose of determining any liability under
the Securities Act of 1933, as amended (the &#147;Securities Act&#148;), each such
post-effective amendment shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial <i><font style="font-style:italic;">bona fide</font></i>
offering thereof.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(3)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; To remove from registration by means of a post-effective
amendment any of the securities being registered which remain unsold at the
termination of the offering.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:1.0in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(b)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; The undersigned Registrant hereby undertakes that, for
purposes of determining any liability under the Securities Act, each filing of
the Registrant&#146;s annual report pursuant to Section 13(a) or Section 15(d) of
the Exchange Act (and, where applicable, each filing of an employee benefit
plan&#146;s annual report pursuant to Section 15(d) of the Exchange Act) that is
incorporated by reference in the Registration Statement shall be deemed to be a
new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial <i><font style="font-style:italic;">bona fide</font></i> offering thereof.</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(c)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Insofar as indemnification for liabilities arising under
the Securities Act may be permitted to directors, officers and controlling
persons of the Registrant pursuant to the foregoing provisions, or otherwise,
the Registrant has been advised that in the opinion of the Commission such
indemnification is against public policy as expressed in the Securities Act and
is, therefore, unenforceable. &#160;In the
event that a claim for indemnification against such liabilities (other than the
payment by the Registrant of expenses incurred or paid by a director, officer
or controlling person of the Registrant in the successful defense of any action,
suit or proceeding) is asserted by such director, officer or controlling person
in connection with the securities being registered, the Registrant will, unless
in the opinion of its counsel the matter has been settled by controlling
precedent, </font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4</font></p>

<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>

</div>
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<div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">submit to a court of
appropriate jurisdiction the question whether such indemnification by it is
against public policy as expressed in the Securities Act and will be governed
by the final adjudication of such issue.</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">5</font></p>

<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>

</div>
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<div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-weight:bold;margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-variant:normal !important;">SIGNATURES</font></b></p>

<p style="font-weight:bold;margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></b></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to the requirements
of the Securities Act of 1933, as amended, the Registrant certifies that it has
reasonable grounds to believe that it meets all of the requirements for filing
on Form S-8 and has duly caused this Registration Statement to be signed on its
behalf by the undersigned thereunto duly authorized, in the City of Denver,
State of Colorado, on this 12<sup>th</sup> &#160;day of May, 2006.</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="50%" valign="top" style="padding:0in .7pt 0in .7pt;width:50.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="50%" colspan="2" valign="top" style="padding:0in .7pt 0in .7pt;width:50.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">RENTECH, INC.</font></p>
  </td>
 </tr>
 <tr>
  <td width="50%" valign="top" style="padding:0in .7pt 0in .7pt;width:50.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in .7pt 0in .7pt;width:3.94%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="46%" valign="top" style="padding:0in .7pt 0in .7pt;width:46.06%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="50%" valign="top" style="padding:0in .7pt 0in .7pt;width:50.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in .7pt 0in .7pt;width:3.94%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="46%" valign="top" style="padding:0in .7pt 0in .7pt;width:46.06%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="50%" valign="top" style="padding:0in .7pt 0in .7pt;width:50.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in .7pt 0in .7pt;width:3.94%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="46%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:46.06%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/
  D. HUNT RAMSBOTTOM</font></p>
  </td>
 </tr>
 <tr>
  <td width="50%" valign="top" style="padding:0in .7pt 0in .7pt;width:50.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in .7pt 0in .7pt;width:3.94%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="46%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:46.06%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">D. Hunt Ramsbottom, President, Chief</font></p>
  </td>
 </tr>
 <tr>
  <td width="50%" valign="top" style="padding:0in .7pt 0in .7pt;width:50.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in .7pt 0in .7pt;width:3.94%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="46%" valign="top" style="padding:0in .7pt 0in .7pt;width:46.06%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Executive Officer and Director</font></p>
  </td>
 </tr>
</table>

<p style="margin:0in 0in 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-weight:bold;margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-variant:normal !important;">POWER
OF ATTORNEY</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">KNOW ALL PERSONS BY THESE
PRESENTS, that each person whose signature appears below hereby constitutes and
appoints Amanda M. Darby and D. Hunt Ramsbottom, and each of them acting
individually, as his true and lawful attorneys-in-fact and agents, with full
power of each to act alone, with full powers of substitution and
resubstitution, for him and in his name, place and stead, in any and all
capacities, to sign any and all amendments to this Registration Statement on
Form S-8, and to file the same, with all exhibits thereto, and all documents in
connection therewith, with the Securities and Exchange Commission, granting
unto said attorneys-in-fact and agents, with full power of each to act alone,
full power and authority to do and perform each and every act and thing
requisite and necessary to be done in connection therewith, as fully for all
intents and purposes as he might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents, or his or their
substitutes, may lawfully do or cause to be done by virtue hereof.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to the
requirements of the Securities Act of 1933, this registration statement has
been signed by the following persons in the capacities and on the dates
indicated.</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="38%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Signature</font></b></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="34%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:34.18%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Title</font></b></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="17%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:17.22%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Date</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;/s/ DENNIS L. YAKOBSON</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Chairman of the Board</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">May 12, 2006</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;Dennis L. Yakobson</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Director, President and Chief</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;/s/ D. HUNT RAMSBOTTOM</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Executive Officer</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">May 12, 2006</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;D. Hunt Ramsbottom</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Principal Executive Officer)</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;/s/ GEOFFREY S. FLAGG</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Chief Accounting Officer</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">May 12, 2006</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;Geoffrey S. Flagg</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Principal Financial Officer)</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;/s/ THOMAS L. BURY</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Director</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">May 12, 2006</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;Thomas L. Bury</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;/s/ RONALD C. BUTZ</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Director</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">May 12, 2006</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;Ronald C. Butz</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;/s/ MICHAEL F. RAY</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Director</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">May 12, 2006</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;Michael F. Ray</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;/s/ HALBERT S. WASHBURN</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Director</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">May 12, 2006</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;Halbert S. Washburn</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;/s/ ERICH W. TIEPEL</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Director</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">May 12, 2006</font></p>
  </td>
 </tr>
 <tr>
  <td width="38%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:38.64%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;&nbsp;Erich W. Tiepel</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="34%" valign="top" style="padding:0in .7pt 0in .7pt;width:34.18%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:4.98%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="17%" valign="top" style="padding:0in .7pt 0in .7pt;width:17.22%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
</table>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">6</font></p>

<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>

</div>
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<br clear="all" style="page-break-before:always;">


<div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-weight:bold;margin:0in 0in .0001pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-variant:normal !important;">INDEX TO EXHIBITS</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="9%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Exhibit<br>
  Number</font></b></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="86%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Description</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">5.1</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="border:none;padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Opinion of Amanda M. Darby, General Counsel of Rentech, Inc.</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.1</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech, Inc. Stock
  Option Agreement with Patricia Butler, dated July 11, 2002</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.2</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech, Inc. Stock
  Option Agreement with Geoffrey S. Flagg, dated May 16, 2001</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.3</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech, Inc. Stock
  Option Agreement with Jim D. Fletcher, dated July 11, 2002</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.4</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech, Inc. Stock
  Option Agreement with Carol Florcyk, dated July 11, 2002</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.5</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech, Inc. Stock
  Option Agreement with Mark D. Ibsen, dated May 16, 2001</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.6</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech, Inc. Stock
  Option Agreement with Mark D. Ibsen, dated July 11, 2002</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.7</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech, Inc. Stock
  Option Agreement with Debra L. McCormick, dated July 11, 2002</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.8</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech, Inc. Stock
  Option Agreement with Peter S. Pedersen, dated May 16, 2001</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.9</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech, Inc. Stock
  Option Agreement with Peter S. Pedersen, dated July 11, 2002</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.10</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech, Inc. Stock
  Option Agreement with Richard Ridley, dated July 11, 2002</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.11</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech, Inc. Stock
  Option Agreement with Richard Sheppard, dated May 16, 2001</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.12</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech, Inc. Stock
  Option Agreement with Richard Sheppard, dated July 11, 2002</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.13</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech, Inc. Stock
  Option Agreement with James E. Siebarth, dated July 11, 2002</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.14</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech, Inc. Stock
  Option Agreement with W. Earl Somerville, dated May 16, 2001</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.15</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech, Inc. Stock
  Option Agreement (1) with W. Earl Somerville, dated July 11, 2002</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.16</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech, Inc. Stock
  Option Agreement (2) with W. Earl Somerville, dated July 11, 2002</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.17</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rentech, Inc. Stock
  Option Agreement with Peter J. Tijm, dated May 16, 2001</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">23.1</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Consent
  of Independent Registered Public Accounting Firm</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">23.2</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Consent of KPMG LLP</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">23.3</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Consent
  of Amanda M. Darby, General Counsel of Rentech, Inc. (included in Exhibit 5.1
  hereto)</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in .7pt 0in .7pt;width:9.26%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">24.1</font></p>
  </td>
  <td width="3%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:3.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="86%" valign="top" style="padding:0in .7pt 0in .7pt;width:86.78%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Power
  of Attorney (included in the signature page hereto)</font></p>
  </td>
 </tr>
</table>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">7</font></p>

<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>

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[{"type": "S-8", "sequence": "1", "filename": "a06-11788_1s8.htm", "description": "SECURITIES TO BE OFFERED TO EMPLOYEES PURSUANT TO EMPLOYEE BENEFIT PLANS", "secsgml_size_bytes": 120169}]
{"company-data": {"conformed-name": "RENTECH INC /CO/", "cik": "0000868725", "assigned-sic": "2851", "irs-number": "840957421", "state-of-incorporation": "CO", "fiscal-year-end": "0930"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-134105", "film-number": "06836372"}, "business-address": {"street1": "1331 17TH STREET SUITE 720", "city": "DENVER", "state": "CO", "zip": "80202-1566", "phone": "3032988008"}}
AS FILED WITH THE SECURITIES AND
EXCHANGE COMMISSION ON MAY 12, 2006
Registration No. 333-
SECURITIES AND EXCHANGE
COMMISSION
Washington,
D.C. 20549
FORM S-8
REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933
RENTECH, INC.
(Exact
name of Registrant as specified in its charter)
Colorado
84-0957421
(State or other
  jurisdiction of incorporation or
(I.R.S. Employer
  Identification No.)
organization)
1331
17th Street, Suite 720
Denver,
Colorado 80202-1557
(303)
298-8008
(Address
of principal executive offices)
Rentech,
Inc. Stock Option Agreement with Patricia Butler, dated July 11, 2002
Rentech,
Inc. Stock Option Agreement with Geoffrey S. Flagg, dated May 16, 2001
Rentech,
Inc. Stock Option Agreement with Jim D. Fletcher, dated July 11, 2002
Rentech,
Inc. Stock Option Agreement with Carol Florcyk, dated July 11, 2002
Rentech,
Inc. Stock Option Agreement with Mark D. Ibsen, dated May 16, 2001
Rentech,
Inc. Stock Option Agreement with Mark D. Ibsen, dated July 11, 2002
Rentech,
Inc. Stock Option Agreement with Debra L. McCormick, dated July 11, 2002
Rentech,
Inc. Stock Option Agreement with Peter S. Pedersen, dated May 16, 2001
Rentech,
Inc. Stock Option Agreement with Peter S. Pedersen, dated July 11, 2002
Rentech,
Inc. Stock Option Agreement with Richard Ridley, dated July 11, 2002
Rentech,
Inc. Stock Option Agreement with Richard Sheppard, dated May 16, 2001
Rentech,
Inc. Stock Option Agreement with Richard Sheppard, dated July 11, 2002
Rentech,
Inc. Stock Option Agreement with James E. Siebarth, dated July 11, 2002
Rentech,
Inc. Stock Option Agreement with W. Earl Somerville, dated May 16, 2001
Rentech,
Inc. Stock Option Agreement (1) with W. Earl Somerville, dated July 11, 2002
Rentech,
Inc. Stock Option Agreement (2) with W. Earl Somerville, dated July 11, 2002
Rentech,
Inc. Stock Option Agreement with Peter J. Tijm, dated May 16, 2001
(Full
title of the Plan)
D.
Hunt Ramsbottom
President
and Chief Executive Officer
Rentech,
Inc.
1331
17th St. Suite 720
Denver,
Colorado  80202-1557
(Name
and address of agent for service)
(303)
298-8008
(Telephone
number, including area code, of agent for service)
CALCULATION
OF REGISTRATION FEE
Title of Securities to be Registered
Amount to be
Registered
Proposed Maximum
Offering
Price Per Share
Proposed Maximum
Aggregate Offering
Price
Amount of
Registration
Fee
Common Stock, par value $0.01 per share, to be issued under the above-captioned
  plans
338,000
$—
(1)
$215,580
$
24
(1)        This
estimate is made pursuant to Rule 457(h) solely for purposes of calculating the
registration fee, and is determined based on the weighted average exercise
price of options outstanding under the above-captioned plans.
PART I
INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS
The information called for
in Part I of Form S-8 is not being filed with or included in this Registration
Statement on Form S-8 (by incorporation by reference or otherwise) in
accordance with the rules and regulations of the Securities and Exchange
Commission (the "Commission").
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
Item 3.                    Incorporation of Documents
by Reference.
The following documents, which were filed
by the Registrant with the Securities and Exchange Commission (the "Commission")
pursuant to Sections 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act
of 1934, as amended (the "Exchange Act"), are incorporated herein by reference:
•
Annual Report
on Form 10-K for the fiscal year ended September 30, 2005, as amended by
Amendment No. 1 on Form 10-K/A;
•
Quarterly
Reports on Form 10-Q for the quarters ended December 31, 2005, and March 31,
2006;
•
Current Reports
on Form 8-K filed on October 6, 2005, October 13, 2005, November 9, 2005,
November 10, 2005, November 16, 2005, November 18, 2005, December 12, 2005,
December 19, 2005, December 29, 2005, January 6, 2006, January 17, 2006,
January 19, 2006, January 26, 2006, January 27, 2006, February 14, 2006,
March 2, 2006
, March 14,
2006, April 3, 2006, April 4, 2006, April 10, 2006, April 14, 2006, April 18,
2006, April 19, 2006, April 24, 2006, April 27, 2006, May 2, 2006 and May 11,
2006 ;
•
The description
of the Registrant's Common Stock contained in the Registrant's Registration
Statement on Form 8-A filed under Section 12(b) of the Securities Exchange Act
of 1934, as amended (the "Exchange Act"); and
All documents subsequently
filed by the Registrant pursuant to Sections 13(a), 13(c), 14 and 15(d) of the
Exchange Act after the date of this Registration Statement, and prior to the
filing of a post-effective amendment which indicates that all securities
offered hereby have been sold or which deregisters all securities then
remaining unsold, shall be deemed to be incorporated by reference herein and to
be a part of this Registration Statement from the date of the filing of such
documents.  Any statement contained in a
document incorporated or deemed to be incorporated by reference herein shall be
deemed to be modified or superseded for purposes of this Registration Statement
to the extent that a statement contained in this Registration Statement, or in
any other subsequently filed document which also is or is deemed to be
incorporated by reference in this Registration Statement, modifies or
supersedes such statement.  Any such
statement so modified or superseded shall not be deemed, except as so modified
or superseded, to constitute a part of this Registration Statement.
Item 4.                    Description of Securities.
Not Applicable.
Item 5.                    Interests of Named Experts
and Counsel.
The validity of the Common Stock
being registered pursuant to this Registration Statement will be passed upon
for the Registrant by Amanda M. Darby, General Counsel of the Registrant.  Ms. Darby holds options to purchase up to
65,000 shares of the Registrant's Common Stock.
Item 6. Indemnification of Directors and Officers.
Section 7-108-402 of the Colorado
Business Corporation Act provides, generally, that the articles of
incorporation of a Colorado corporation may contain a provision eliminating or
limiting the personal liability of a director to the corporation or its
shareholders for monetary damages for breach of fiduciary duty as a director;
except that any such provision may not eliminate or limit the liability of a
director for (i) any breach of the director's duty of loyalty to the
corporation or its shareholders, (ii) acts or omissions not in good faith or
which involve intentional misconduct or a knowing violation of law, (iii) acts
specified in Section 7-108-403 (concerning unlawful distributions), or (iv) any
transaction from which a director directly or indirectly derived an improper
personal benefit.  The articles of
incorporation may not eliminate or limit the liability of a director for any
act or omission occurring prior to the date on which the provision becomes effective.
 The Registrant's articles of
incorporation contain a provision eliminating liability as permitted by Section
7-108-402 of the Colorado Business Corporation Act.  The Registrant's articles of incorporation
further provide that the Registrant's directors
2
and officers will not be held personally liable for
any injury to persons or property caused by the wrongful act of any of the
Registrant's employees unless either (i) the director or officer was personally
involved in the situation leading to the litigation or (ii) the director or officer
committed a criminal offense in connection with the litigation.
Section 7-109-103 of the Colorado
Business Corporation Act provides that a Colorado corporation must indemnify a
person (i) who is or was a director of the corporation or an individual who,
while serving as a director of the corporation, is or was serving at the
corporation's request as a director, officer, partner, trustee, employee or
fiduciary or agent of another corporation or other entity or of any employee
benefit plan (a "Director") or officer of the corporation and (ii) who was
wholly successful, on the merits or otherwise, in defense of any threatened,
pending, or completed action, suit, or proceeding, whether civil, criminal,
administrative, or investigative and whether formal or informal (a "Proceeding"),
in which the Director was a party, against reasonable expenses incurred by him
or her in connection with the proceeding, unless such indemnity is limited by
the corporation's articles of incorporation.  The Registrant's articles of incorporation do
not contain any such limitation.
Section 7-109-102 of the Colorado
Business Corporation Act provides, generally, that a Colorado corporation may
indemnify a person made a party to a Proceeding because the person is or was a
Director, against any obligation incurred with respect to a Proceeding, to pay
a judgment, settlement, penalty, fine (including an excise tax assessed with
respect to an employee benefit plan) or reasonable expenses incurred in the
proceeding if the Director conducted himself or herself in good faith and the
Director reasonably believed, in the case of conduct in an official capacity
with the corporation, that the Director's conduct was in the corporation's best
interests and, in all other cases, the Director's conduct was at least not
opposed to the corporation's best interests and, with respect to any criminal
proceedings, the Director had no reasonable cause to believe that his or her
conduct was unlawful. The Registrant's articles of incorporation provide for
such indemnification. A corporation may not indemnify a Director in connection
with any proceeding by or in the right of the corporation in which the Director
was adjudged liable to the corporation or, in connection with any other
proceeding charging the Director derived an improper personal benefit, whether
or not involving actions in an official capacity, in which proceeding the
Director was judged liable on the basis that he derived an improper personal
benefit. Any indemnification permitted in connection with a Proceeding by or in
the right of the corporation is limited to reasonable expenses incurred in
connection with the proceeding.
Under Section 7-109-107 of the Colorado
Business Corporation Act, unless otherwise provided in its articles of
incorporation, a Colorado corporation may indemnify an officer, employee,
fiduciary, or agent of the corporation to the same extent as a Director and may
indemnify any such non-Director to a greater extent, if not inconsistent with
public policy and if provided for by its bylaws, general or specific action of
its board of directors or shareholders or contract.  The Registrant's articles of incorporation
allow indemnification of its officers, employees and agents to the same extent
as the Registrant's Directors.
Section 7-109-104 of the Colorado
Business Corporation Act authorizes a Colorado corporation to pay expenses
incurred in defending a proceeding in advance of the final disposition of the
Proceeding if the person undertakes in writing to repay the amount if it is
ultimately determined that the person did not meet the statutory standards of
conduct.
The Registrant has obtained
policies of directors' and officers' liability insurance.  These policies insure the Registrant's
directors and officers against the costs of defense, settlement or payment of a
judgment under certain circumstances and subject to policy exclusions and
limitations.
Item 7.                    Exemption from Registration
Claimed.
Not Applicable.
Item 8.                    Exhibits.
The following is a list of
exhibits filed as part of this Registration Statement and incorporated herein:
Exhibit
Number
Description
5.1
Opinion of Amanda M.
  Darby, General Counsel of Rentech, Inc.
10.1
Rentech,
  Inc. Stock Option Agreement with Patricia Butler, dated July 11, 2002
10.2
Rentech,
  Inc. Stock Option Agreement with Geoffrey S. Flagg, dated May 16, 2001
10.3
Rentech,
  Inc. Stock Option Agreement with Jim D. Fletcher, dated July 11, 2002
10.4
Rentech,
  Inc. Stock Option Agreement with Carol Florcyk, dated July 11, 2002
10.5
Rentech,
  Inc. Stock Option Agreement with Mark D. Ibsen, dated May 16, 2001
10.6
Rentech,
  Inc. Stock Option Agreement with Mark D. Ibsen, dated July 11, 2002
10.7
Rentech,
  Inc. Stock Option Agreement with Debra L. McCormick, dated July 11, 2002
3
10.8
Rentech,
  Inc. Stock Option Agreement with Peter S. Pedersen, dated May 16, 2001
10.9
Rentech,
  Inc. Stock Option Agreement with Peter S. Pedersen, dated July 11, 2002
10.10
Rentech,
  Inc. Stock Option Agreement with Richard Ridley, dated July 11, 2002
10.11
Rentech,
  Inc. Stock Option Agreement with Richard Sheppard, dated May 16, 2001
10.12
Rentech,
  Inc. Stock Option Agreement with Richard Sheppard, dated July 11, 2002
10.13
Rentech,
  Inc. Stock Option Agreement with James E. Siebarth, dated July 11, 2002
10.14
Rentech,
  Inc. Stock Option Agreement with W. Earl Somerville, dated May 16, 2001
10.15
Rentech,
  Inc. Stock Option Agreement (1) with W. Earl Somerville, dated July 11, 2002
10.16
Rentech,
  Inc. Stock Option Agreement (2) with W. Earl Somerville, dated July 11, 2002
10.17
Rentech,
  Inc. Stock Option Agreement with Peter J. Tijm, dated May 16, 2001
23.1
Consent of Independent
  Registered Public Accounting Firm
23.2
Consent of KPMG LLP
23.3
Consent of Amanda M.
  Darby, General Counsel of Rentech, Inc. (included in Exhibit 5.1 hereto)
24.1
Power of Attorney
  (included in the signature page hereto)
Item 9.                    Undertakings.
(a)           The undersigned Registrant hereby undertakes:
(1)           To file, during any period in which offers or sales are
being made, a post-effective amendment to this Registration Statement:
(i)            To include any prospectus required by Section 10(a)(3) of
the Securities Act;
(ii)           To reflect in the prospectus any facts or events arising
after the effective date of this Registration Statement (or the most recent
post-effective amendment thereof) which, individually or in the aggregate,
represent a fundamental change in the information set forth in the Registration
Statement. Notwithstanding the foregoing, any increase or decrease in volume of
securities offered (if the total dollar value of securities offered would not
exceed that which was registered) and any deviation from the low or high end of
the estimated maximum offering range may be reflected in the form of prospectus
filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the
changes in volume and price represent no more than 20 percent change in the
maximum aggregate offering price set forth in the "Calculation of Registration
Fee" table in the effective Registration Statement;
(iii)          To include any material information with respect to the
plan of distribution not previously disclosed in the Registration Statement or
any material change to such information in the Registration Statement;
provided, however
, that paragraphs (a)(1)(i) and (a)(1)(ii) do
not apply if the information required to be included in a post-effective
amendment by those paragraphs is contained in periodic reports filed with or
furnished to the Commission by the Registrant pursuant to Section 13 or Section
15(d) of the Exchange Act that are incorporated by reference in this
Registration Statement.
(2)           That, for the purpose of determining any liability under
the Securities Act of 1933, as amended (the "Securities Act"), each such
post-effective amendment shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial
bona fide
offering thereof.
(3)           To remove from registration by means of a post-effective
amendment any of the securities being registered which remain unsold at the
termination of the offering.
(b)           The undersigned Registrant hereby undertakes that, for
purposes of determining any liability under the Securities Act, each filing of
the Registrant's annual report pursuant to Section 13(a) or Section 15(d) of
the Exchange Act (and, where applicable, each filing of an employee benefit
plan's annual report pursuant to Section 15(d) of the Exchange Act) that is
incorporated by reference in the Registration Statement shall be deemed to be a
new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial
bona fide
offering thereof.
(c)           Insofar as indemnification for liabilities arising under
the Securities Act may be permitted to directors, officers and controlling
persons of the Registrant pursuant to the foregoing provisions, or otherwise,
the Registrant has been advised that in the opinion of the Commission such
indemnification is against public policy as expressed in the Securities Act and
is, therefore, unenforceable.  In the
event that a claim for indemnification against such liabilities (other than the
payment by the Registrant of expenses incurred or paid by a director, officer
or controlling person of the Registrant in the successful defense of any action,
suit or proceeding) is asserted by such director, officer or controlling person
in connection with the securities being registered, the Registrant will, unless
in the opinion of its counsel the matter has been settled by controlling
precedent,
4
submit to a court of
appropriate jurisdiction the question whether such indemnification by it is
against public policy as expressed in the Securities Act and will be governed
by the final adjudication of such issue.
5
SIGNATURES
Pursuant to the requirements
of the Securities Act of 1933, as amended, the Registrant certifies that it has
reasonable grounds to believe that it meets all of the requirements for filing
on Form S-8 and has duly caused this Registration Statement to be signed on its
behalf by the undersigned thereunto duly authorized, in the City of Denver,
State of Colorado, on this 12
th
day of May, 2006.
RENTECH, INC.
By:
/s/
  D. HUNT RAMSBOTTOM
D. Hunt Ramsbottom, President, Chief
Executive Officer and Director
POWER
OF ATTORNEY
KNOW ALL PERSONS BY THESE
PRESENTS, that each person whose signature appears below hereby constitutes and
appoints Amanda M. Darby and D. Hunt Ramsbottom, and each of them acting
individually, as his true and lawful attorneys-in-fact and agents, with full
power of each to act alone, with full powers of substitution and
resubstitution, for him and in his name, place and stead, in any and all
capacities, to sign any and all amendments to this Registration Statement on
Form S-8, and to file the same, with all exhibits thereto, and all documents in
connection therewith, with the Securities and Exchange Commission, granting
unto said attorneys-in-fact and agents, with full power of each to act alone,
full power and authority to do and perform each and every act and thing
requisite and necessary to be done in connection therewith, as fully for all
intents and purposes as he might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents, or his or their
substitutes, may lawfully do or cause to be done by virtue hereof.
Pursuant to the
requirements of the Securities Act of 1933, this registration statement has
been signed by the following persons in the capacities and on the dates
indicated.
Signature
Title
Date
/s/ DENNIS L. YAKOBSON
Chairman of the Board
May 12, 2006
Dennis L. Yakobson
Director, President and Chief
/s/ D. HUNT RAMSBOTTOM
Executive Officer
May 12, 2006
D. Hunt Ramsbottom
(Principal Executive Officer)
/s/ GEOFFREY S. FLAGG
Chief Accounting Officer
May 12, 2006
Geoffrey S. Flagg
(Principal Financial Officer)
/s/ THOMAS L. BURY
Director
May 12, 2006
Thomas L. Bury
/s/ RONALD C. BUTZ
Director
May 12, 2006
Ronald C. Butz
/s/ MICHAEL F. RAY
Director
May 12, 2006
Michael F. Ray
/s/ HALBERT S. WASHBURN
Director
May 12, 2006
Halbert S. Washburn
/s/ ERICH W. TIEPEL
Director
May 12, 2006
Erich W. Tiepel
6
INDEX TO EXHIBITS
Exhibit
Number
Description
5.1
Opinion of Amanda M. Darby, General Counsel of Rentech, Inc.
10.1
Rentech, Inc. Stock
  Option Agreement with Patricia Butler, dated July 11, 2002
10.2
Rentech, Inc. Stock
  Option Agreement with Geoffrey S. Flagg, dated May 16, 2001
10.3
Rentech, Inc. Stock
  Option Agreement with Jim D. Fletcher, dated July 11, 2002
10.4
Rentech, Inc. Stock
  Option Agreement with Carol Florcyk, dated July 11, 2002
10.5
Rentech, Inc. Stock
  Option Agreement with Mark D. Ibsen, dated May 16, 2001
10.6
Rentech, Inc. Stock
  Option Agreement with Mark D. Ibsen, dated July 11, 2002
10.7
Rentech, Inc. Stock
  Option Agreement with Debra L. McCormick, dated July 11, 2002
10.8
Rentech, Inc. Stock
  Option Agreement with Peter S. Pedersen, dated May 16, 2001
10.9
Rentech, Inc. Stock
  Option Agreement with Peter S. Pedersen, dated July 11, 2002
10.10
Rentech, Inc. Stock
  Option Agreement with Richard Ridley, dated July 11, 2002
10.11
Rentech, Inc. Stock
  Option Agreement with Richard Sheppard, dated May 16, 2001
10.12
Rentech, Inc. Stock
  Option Agreement with Richard Sheppard, dated July 11, 2002
10.13
Rentech, Inc. Stock
  Option Agreement with James E. Siebarth, dated July 11, 2002
10.14
Rentech, Inc. Stock
  Option Agreement with W. Earl Somerville, dated May 16, 2001
10.15
Rentech, Inc. Stock
  Option Agreement (1) with W. Earl Somerville, dated July 11, 2002
10.16
Rentech, Inc. Stock
  Option Agreement (2) with W. Earl Somerville, dated July 11, 2002
10.17
Rentech, Inc. Stock
  Option Agreement with Peter J. Tijm, dated May 16, 2001
23.1
Consent
  of Independent Registered Public Accounting Firm
23.2
Consent of KPMG LLP
23.3
Consent
  of Amanda M. Darby, General Counsel of Rentech, Inc. (included in Exhibit 5.1
  hereto)
24.1
Power
  of Attorney (included in the signature page hereto)
7