<html>
  <head>
    <title>
</title>
</head>
  <body bgcolor="#ffffff">
    <div><br>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="right"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="right"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="right">&#160;</div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>UNITED
        STATES</strong></font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>SECURITIES
        AND EXCHANGE COMMISSION</strong></font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Washington,
        D.C. 20549</strong></font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>FORM
        8-K</strong></font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>CURRENT
        REPORT</strong></font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Pursuant
        to Section 13 or 15(d) of</strong></font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>the
        Securities Exchange Act of 1934</strong></font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Date
        of Report (Date of earliest event reported): December 29,
        2005</strong></font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>ARCH
        CHEMICALS, INC.</strong></font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: Times New Roman, serif"><strong>(Exact
        name of registrant as specified in its charter)</strong></font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
      <div>
        <table cellpadding="0" cellspacing="0" width="100%">

            <tr>
              <td valign="top" width="20%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Virginia</strong></font></div>
              </td>
              <td align="left" valign="bottom" width="1%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </td>
              <td valign="top" width="19%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>1-14601</strong></font></div>
              </td>
              <td align="left" valign="bottom" width="1%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </td>
              <td valign="top" width="19%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>06-1526315</strong></font></div>
              </td>
            </tr>
            <tr>
              <td valign="top" width="20%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: Times New Roman, serif"><strong>(State
                  or other jurisdiction of incorporation)</strong></font></div>
              </td>
              <td align="left" valign="bottom" width="1%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </td>
              <td valign="top" width="19%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: Times New Roman, serif"><strong>(Commission
                  File Number)</strong></font></div>
              </td>
              <td align="left" valign="bottom" width="1%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </td>
              <td valign="top" width="19%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: Times New Roman, serif"><strong>(IRS
                  Employer Identification
                  No.)</strong></font></div>
              </td>
            </tr>

        </table>
      </div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
      <div>
        <table cellpadding="0" cellspacing="0" width="100%">

            <tr>
              <td align="left" valign="middle" width="29%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </td>
              <td align="left" valign="bottom" width="2%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </td>
              <td align="left" valign="middle" width="28%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </td>
            </tr>
            <tr>
              <td valign="top" width="29%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>501
                  Merritt 7, Norwalk, CT</strong></font></div>
              </td>
              <td align="left" valign="bottom" width="2%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </td>
              <td valign="top" width="28%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>06851</strong></font></div>
              </td>
            </tr>
            <tr>
              <td valign="top" width="29%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: Times New Roman, serif"><strong>(Address
                  of principal executive offices)</strong></font></div>
              </td>
              <td align="left" valign="bottom" width="2%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </td>
              <td valign="top" width="28%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: Times New Roman, serif"><strong>(Zip
                  code)</strong></font></div>
              </td>
            </tr>

        </table>
      </div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Registrant's
        telephone number, including area code: (203) 229-2900</strong></font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>(N/A)</strong></font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 7pt; FONT-FAMILY: Times New Roman, serif">(Former
        name or former address, if changed since last report)</font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center">&#160;</div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Check
        the
        appropriate box below if the Form 8-K filing is intended to simultaneously
        satisfy the filing obligation of the registrant under any of the following
        provisions (see General Instruction A.2. below):</font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Wingdings">o</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;&#160;&#160;&#160;Written
        communications pursuant to Rule 425 under the Securities Act (17 CFR
        230.425)</font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Wingdings">o</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;&#160;&#160;&#160;Soliciting
        material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
        240.14a-12)</font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Wingdings">o</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;&#160;&#160;&#160;Pre-commencement
        communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR
        240.14d-2(b))</font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Wingdings">o</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;&#160;&#160;&#160;Pre-commencement
        communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR
        240.13e-4(c))</font><a name="PGBRK"/><a name="FTR"/><a name="GLFTR"/><a name="PN"/></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div><br>
      <div id="PGBRK" style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
        <div id="FTR">
          <div id="GLFTR" style="WIDTH: 100%" align="left">&#160;</div>
        </div>
        <div id="PN" style="PAGE-BREAK-AFTER: always">
          <div style="WIDTH: 100%; TEXT-ALIGN: center">&#160;</div>
          <div style="WIDTH: 100%; TEXT-ALIGN: center">
            <hr style="COLOR: black" noshade size="2">
          </div>
        </div>
        <div id="HDR">
          <div id="GLHDR" style="WIDTH: 100%" align="right">&#160;</div>
        </div>
      </div><br>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="right">&#160;</div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>ITEM
        7.01 REGULATION FD DISCLOSURE</strong></font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">On
        December 29, 2005,&#160;Arch Chemicals, Inc. announced that it had sold
        approximately 550 acres of vacant land at its Brandenburg, Kentucky site
        for
        approximately $6 million in cash to Meade County/Brandenburg Industrial
        Development Authority. Attached as Exhibit 99, and incorporated herein by
        reference, is a copy of the registrant's press release dated December 29,
        2005.</font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">This
        information might be considered material so the Company is disclosing this
        information in this Form 8-K.</font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>ITEM
        9.01. FINANCIAL STATEMENTS AND EXHIBITS</strong></font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(c)
        Exhibits</font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">99.&#160;Press
        Release, dated December 29, 2005.</font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br>&#160;</div>
      <div id="PGBRK" style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
        <div id="FTR">
          <div id="GLFTR" style="WIDTH: 100%" align="left">&#160;</div>
        </div>
        <div id="PN" style="PAGE-BREAK-AFTER: always">
          <div style="WIDTH: 100%; TEXT-ALIGN: center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">2</font></div>
          <div style="WIDTH: 100%; TEXT-ALIGN: center">
            <hr style="COLOR: black" noshade size="2">
          </div>
        </div>
        <div id="HDR">
          <div id="GLHDR" style="WIDTH: 100%" align="right">&#160;</div>
        </div>
      </div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><a name="id_0_7"/><a name="id_0_8">&#160;</a></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">SIGNATURES</font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Pursuant
        to the requirements of the Securities Exchange Act of 1934, the Registrant
        has
        duly caused this report to be signed on its behalf by the undersigned hereunto
        duly authorized.</font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
      <div>
        <table cellpadding="0" cellspacing="0" width="100%">

            <tr>
              <td align="left" valign="top" width="39%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </td>
              <td align="left" valign="top" width="3%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </td>
              <td align="left" valign="top" width="39%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </td>
            </tr>
            <tr>
              <td align="left" valign="top" width="39%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </td>
              <td align="left" colspan="2" valign="top" width="42%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>ARCH
                  CHEMICALS, INC.</strong></font></div>
              </td>
            </tr>
            <tr>
              <td align="left" valign="top" width="39%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </td>
              <td align="left" valign="top" width="3%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </td>
              <td align="left" valign="top" width="39%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </td>
            </tr>
            <tr>
              <td align="left" valign="top" width="39%" style="BORDER-BOTTOM: #ffffff thin solid">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Date:&#160;December
                  29, 2005&#160;&#160;&#160;&#160;</font></div>
              </td>
              <td align="left" valign="top" width="3%" style="BORDER-BOTTOM: #ffffff thin solid">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">By:&#160;&#160;</font></div>
              </td>
              <td align="left" valign="top" width="39%" style="BORDER-BOTTOM: black thin solid">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">/s/&#160;Steven
                  C. Giuliano</font></div>
              </td>
            </tr>
            <tr>
              <td align="left" colspan="2" valign="top" width="43%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </td>
              <td align="left" valign="top" width="39%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Name:
                  Steven C. Giuliano</font></div>
              </td>
            </tr>
            <tr>
              <td align="left" colspan="2" valign="top" width="43%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </td>
              <td align="left" valign="top" width="39%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Title:&#160;Controller</font></div>
              </td>
            </tr>

        </table></div><br>
      <div id="PGBRK" style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
        <div id="FTR">
          <div id="GLFTR" style="WIDTH: 100%" align="left">&#160;</div>
        </div>
        <div id="PN" style="PAGE-BREAK-AFTER: always">
          <div style="WIDTH: 100%; TEXT-ALIGN: center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">3</font></div>
          <div style="WIDTH: 100%; TEXT-ALIGN: center">
            <hr style="COLOR: black" noshade size="2">
          </div>
        </div>
        <div id="HDR">
          <div id="GLHDR" style="WIDTH: 100%" align="right">&#160;</div>
        </div>
      </div><br>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="right">&#160;</div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Exhibit
        Index</font></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;&#160;&#160;&#160;&#160;</font></div>
      <div>
        <table cellpadding="0" cellspacing="0" width="100%">

            <tr>
              <td align="left" valign="middle" width="9%" style="BORDER-BOTTOM: black thin solid">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Exhibit&#160;No.</strong></font></div>
              </td>
              <td align="left" valign="middle" width="7%" style="BORDER-BOTTOM: black thin solid">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </td>
              <td align="left" valign="middle" width="65%" style="BORDER-BOTTOM: black thin solid">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;&#160;</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Description</strong></font></div>
              </td>
            </tr>
            <tr>
              <td align="left" valign="middle" width="9%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;99.&#160;</font></div>
              </td>
              <td align="left" valign="middle" width="7%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
              </td>
              <td align="left" valign="middle" width="65%">
                <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;Press
                  Release, dated December 29, 2005.</font></div>
              </td>
            </tr>

        </table>
      </div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
      <div id="PGBRK" style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt">
        <div id="FTR">
          <div id="GLFTR" style="WIDTH: 100%" align="left">&#160;</div>
        </div>
        <div id="PN">
          <div style="WIDTH: 100%; TEXT-ALIGN: center"><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">4</font></div>
          <div style="WIDTH: 100%; TEXT-ALIGN: center">
            <hr style="COLOR: black" noshade size="2">
          </div>
        </div>
        <div id="HDR">
          <div id="GLHDR" style="WIDTH: 100%" align="right">&#160;</div>
        </div>
      </div>
      <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="right">&#160;</div>
    </div>
  </body>
</html>
{"company-data": {"conformed-name": "ARCH CHEMICALS INC", "cik": "0001072343", "assigned-sic": "2800", "irs-number": "061526315", "state-of-incorporation": "VA", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-14601", "film-number": "051290090"}, "business-address": {"street1": "501 MERRITT 7", "street2": "P O BOX 4500", "city": "NORWALK", "state": "CT", "zip": "06856-4500", "phone": "2037503729"}, "mail-address": {"street1": "501 MERRITT 7", "street2": "P O BOX 4500", "city": "NORWALK", "state": "CT", "zip": "06856-4500"}}
UNITED
        STATES
SECURITIES
        AND EXCHANGE COMMISSION
Washington,
        D.C. 20549
FORM
        8-K
CURRENT
        REPORT
Pursuant
        to Section 13 or 15(d) of
the
        Securities Exchange Act of 1934
Date
        of Report (Date of earliest event reported): December 29,
        2005
ARCH
        CHEMICALS, INC.
(Exact
        name of registrant as specified in its charter)
Virginia
1-14601
06-1526315
(State
                  or other jurisdiction of incorporation)
(Commission
                  File Number)
(IRS
                  Employer Identification
                  No.)
501
                  Merritt 7, Norwalk, CT
06851
(Address
                  of principal executive offices)
(Zip
                  code)
Registrant's
        telephone number, including area code: (203) 229-2900
(N/A)
(Former
        name or former address, if changed since last report)
Check
        the
        appropriate box below if the Form 8-K filing is intended to simultaneously
        satisfy the filing obligation of the registrant under any of the following
        provisions (see General Instruction A.2. below):
o
Written
        communications pursuant to Rule 425 under the Securities Act (17 CFR
        230.425)
o
Soliciting
        material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
        240.14a-12)
o
Pre-commencement
        communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR
        240.14d-2(b))
o
Pre-commencement
        communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR
        240.13e-4(c))
ITEM
        7.01 REGULATION FD DISCLOSURE
On
        December 29, 2005, Arch Chemicals, Inc. announced that it had sold
        approximately 550 acres of vacant land at its Brandenburg, Kentucky site
        for
        approximately $6 million in cash to Meade County/Brandenburg Industrial
        Development Authority. Attached as Exhibit 99, and incorporated herein by
        reference, is a copy of the registrant's press release dated December 29,
        2005.
This
        information might be considered material so the Company is disclosing this
        information in this Form 8-K.
ITEM
        9.01. FINANCIAL STATEMENTS AND EXHIBITS
(c)
        Exhibits
99. Press
        Release, dated December 29, 2005.
2
SIGNATURES
Pursuant
        to the requirements of the Securities Exchange Act of 1934, the Registrant
        has
        duly caused this report to be signed on its behalf by the undersigned hereunto
        duly authorized.
ARCH
                  CHEMICALS, INC.
Date: December
                  29, 2005
By:
/s/ Steven
                  C. Giuliano
Name:
                  Steven C. Giuliano
Title: Controller
3
Exhibit
        Index
Exhibit No.
Description
99.
Press
                  Release, dated December 29, 2005.
4