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    <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>
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      AND EXCHANGE COMMISSION</strong></font></div>
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      D.C. 20549</strong></font></div>
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      8-K</strong></font></div>
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    <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
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    <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>
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      Securities Exchange Act of 1934</strong></font></div>
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      of Report (Date of earliest event reported): June 15, 2006</strong></font></div>
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      CHEMICALS, INC.</strong></font></div>
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    <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&#8217;s
      telephone number, including area code: (203) 229-2900</strong></font></div>
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      name or former address, if changed since last report)</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"><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: 7pt; FONT-FAMILY: Times New Roman, serif">_________________________________________</font></div>
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    <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>
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<font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Written
        communications pursuant to Rule 425 under the Securities Act (17 CFR
        230.425)</font></font></div>
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<font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Soliciting
      material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
      240.14a-12)</font></font></div>
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<font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Pre-commencement
      communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR
      240.14d-2(b))</font></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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<font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Pre-commencement
      communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR
      240.13e-4(c))</font></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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    <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"><a name="id_0_4"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>Item
      1.01 Entry into a Material Definitive Agreement.</strong></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;</font></a></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
      June
      15, 2006, Arch Chemicals, Inc. (the &#8220;Company&#8221;) entered into an unsecured
      Revolving Credit Agreement, dated as of&#160;June 15, 2006 (the &#8220;New Credit
      Agreement&#8221;), with the lenders party thereto and JPMorgan Chase Bank, N.A., as
      administrative agent, J.P. Morgan Securities, Inc., as joint lead arranger
      and
      joint book manager, Banc of America Securities, L.L.C., as joint lead arranger
      and joint book manager, SunTrust Bank, as documentation agent and Bank of
      America, National Association and Citizens Bank of Massachusetts, as
      co-syndication agents. The New Credit Agreement, which matures on June 15,
      2011,
      provides for the Company to borrow up to $350 million on a revolving basis
      from
      the lenders at various fixed and floating interest rates and also provides
      for
      the issuance of letters of credit. The New Credit Agreement permits the maximum
      borrowing amount to be increased from $350 million up to a maximum of $400
      million in certain circumstances. The New Credit Agreement contains various
      representations and financial and other covenants, including (i) an interest
      coverage ratio covenant and leverage ratio covenant, each of which contains
      ratio limits that are consistent with the Prior Credit Agreement, and (ii)
      a
      restricted payments covenant. The restricted payments covenant restricts the
      payment of dividends and the repurchase of Company shares to $65 million plus
      50
      percent of cumulative adjusted net income (loss) for the period beginning June
      15, 2006. At June 15, 2006, restricted payments were limited to $65
      million.</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">The
      New
      Credit Agreement replaced the Company&#8217;s unsecured $210 million Revolving Credit
      Agreement dated as of June 20, 2003, as amended (the &#8220;Prior Credit Agreement&#8221;),
      among the Company, the lenders party thereto, JPMorgan Chase Bank, N.A.
      (formerly known as JPMorgan Chase Bank), as administrative agent, Fleet National
      Bank, as syndication agent, and Bank of America, National Association, as
      documentation agent. The Prior Credit Agreement was set to mature on June 20,
      2006.</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">The
      New
      Credit Agreement which is filed as Exhibit 4 hereto is incorporated herein
      by
      reference.</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
      1.02 Termination of a Material Definitive Agreement.</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">The
      Company terminated its Prior Credit Agreement on June 15, 2006. The Prior Credit
      Agreement was terminated in connection with the entering of the New Credit
      Agreement on the same day. The Prior Credit Agreement provided for the borrowing
      on a revolving basis up to $210 million at various interest rates and was set
      to
      mature on June 20, 2006. No early termination penalties applied.</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
      2.03 Creation of a Direct Financial Obligation or an Obligation under an
      Off-Balance Sheet Arrangement of a Registrant.</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><br></div>
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      discussion under Item 1.01 above is incorporated herein by
      reference.</font></div>
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      9.01. FINANCIAL STATEMENTS AND EXHIBITS</strong></font></a></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">(d)
      Exhibits</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
    <div>
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            <td style="width: 18pt;">
            </td>
            <td align="left" style="width: 18pt;"><font size="2">4.</font></td>
            <td align="left">
              <div align="left"><font size="2"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Revolving
                Credit Agreement, dated as of June 15, 2006, among Arch Chemicals,
                Inc.,
                the Lenders Party thereto, JPMorgan Chase Bank, N.A., as Administrative
                Agent, J.P. Morgan Securities Inc., as Joint Lead Arranger and Joint
                Book
                Manager, Banc of America Securities, L.L.C., as Joint Lead Arranger
                and
                Joint Book Manager, SunTrust Bank, as Documentation Agent, and Bank
                of</font><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">America,
                National Association and Citizens Bank of Massachusetts, as Co-Syndication
                Agents.</font></font></div>
            </td>
          </tr>

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    <div align="center">&#160;</div>
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    <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">SIGNATURES</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">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"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">
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          <tr valign="top" bgcolor="#ffffff">
            <td width="50%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">Date:&#160;June
              20, 2006</font></td>
            <td width="1%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
            <td width="49%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
          </tr>
          <tr valign="top" bgcolor="#ffffff">
            <td width="50%">&#160;</td>
            <td width="1%">&#160;</td>
            <td width="49%">&#160;</td>
          </tr>
          <tr valign="top" bgcolor="#ffffff">
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
            <td colspan="2"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">ARCH
              CHEMICALS,
              INC.</font></td>
          </tr>
          <tr valign="top" bgcolor="#ffffff">
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;<br>&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;<br>&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;<br>&#160;</font></td>
          </tr>
          <tr valign="top" bgcolor="#ffffff">
            <td>&#160;</td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">By:&#160;&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">/s/&#160;Louis
              S.
              Massimo</font></td>
          </tr>
          <tr valign="top" bgcolor="#ffffff">
            <td colspan="2" valign="bottom">
              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="right"><font style="FONT-FAMILY: " size="2">Name:
                &#160;</font></div>
            </td>
            <td align="left">
              <hr style="COLOR: black" align="left" noshade size="2" width="80%"><font size="2">Louis
              S. Massimo</font></td>
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              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="right"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">Title:
                &#160;</font></div>
            </td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">Executive
              Vice
              President and Chief Financial Officer</font></td>
          </tr>

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      Index</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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            <td align="left" valign="bottom" width="8%" 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"><strong>Exhibit&#160;No.</strong></font></div>
            </td>
            <td align="left" valign="bottom" width="4%">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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            <td align="left" valign="bottom" width="78%" style="border-bottom: black thin solid;">
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            </td>
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            <td valign="top" width="8%">&#160;</td>
            <td align="left" valign="bottom" width="4%">&#160;</td>
            <td align="left" valign="bottom" width="78%">&#160;</td>
          </tr>
          <tr>
            <td valign="top" width="8%">
              <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">4.</font></div>
            </td>
            <td align="left" valign="bottom" width="4%">
              <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="78%">
              <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">Revolving
                Credit Agreement, dated as of June 15, 2006, among Arch Chemicals,
                Inc.,
                the Lenders Party thereto, JPMorgan Chase Bank, N.A., as Administrative
                Agent, J.P. Morgan Securities Inc., as Joint Lead Arranger and Joint
                Book
                Manager, Banc of America Securities, L.L.C., as Joint Lead Arranger
                and
                Joint Book Manager, SunTrust Bank, as Documentation Agent, and Bank
                of
                America, National Association and Citizens Bank of Massachusetts,
                as
                Co-Syndication Agents.</font></div>
            </td>
          </tr>

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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): June 15, 2006
____________________
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):
¨
Written
        communications pursuant to Rule 425 under the Securities Act (17 CFR
        230.425)
¨
Soliciting
      material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
      240.14a-12)
¨
Pre-commencement
      communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR
      240.14d-2(b))
¨
Pre-commencement
      communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR
      240.13e-4(c))
Item
      1.01 Entry into a Material Definitive Agreement.
On
      June
      15, 2006, Arch Chemicals, Inc. (the "Company") entered into an unsecured
      Revolving Credit Agreement, dated as of June 15, 2006 (the "New Credit
      Agreement"), with the lenders party thereto and JPMorgan Chase Bank, N.A., as
      administrative agent, J.P. Morgan Securities, Inc., as joint lead arranger
      and
      joint book manager, Banc of America Securities, L.L.C., as joint lead arranger
      and joint book manager, SunTrust Bank, as documentation agent and Bank of
      America, National Association and Citizens Bank of Massachusetts, as
      co-syndication agents. The New Credit Agreement, which matures on June 15,
      2011,
      provides for the Company to borrow up to $350 million on a revolving basis
      from
      the lenders at various fixed and floating interest rates and also provides
      for
      the issuance of letters of credit. The New Credit Agreement permits the maximum
      borrowing amount to be increased from $350 million up to a maximum of $400
      million in certain circumstances. The New Credit Agreement contains various
      representations and financial and other covenants, including (i) an interest
      coverage ratio covenant and leverage ratio covenant, each of which contains
      ratio limits that are consistent with the Prior Credit Agreement, and (ii)
      a
      restricted payments covenant. The restricted payments covenant restricts the
      payment of dividends and the repurchase of Company shares to $65 million plus
      50
      percent of cumulative adjusted net income (loss) for the period beginning June
      15, 2006. At June 15, 2006, restricted payments were limited to $65
      million.
The
      New
      Credit Agreement replaced the Company's unsecured $210 million Revolving Credit
      Agreement dated as of June 20, 2003, as amended (the "Prior Credit Agreement"),
      among the Company, the lenders party thereto, JPMorgan Chase Bank, N.A.
      (formerly known as JPMorgan Chase Bank), as administrative agent, Fleet National
      Bank, as syndication agent, and Bank of America, National Association, as
      documentation agent. The Prior Credit Agreement was set to mature on June 20,
      2006.
The
      New
      Credit Agreement which is filed as Exhibit 4 hereto is incorporated herein
      by
      reference.
Item
      1.02 Termination of a Material Definitive Agreement.
The
      Company terminated its Prior Credit Agreement on June 15, 2006. The Prior Credit
      Agreement was terminated in connection with the entering of the New Credit
      Agreement on the same day. The Prior Credit Agreement provided for the borrowing
      on a revolving basis up to $210 million at various interest rates and was set
      to
      mature on June 20, 2006. No early termination penalties applied.
Item
      2.03 Creation of a Direct Financial Obligation or an Obligation under an
      Off-Balance Sheet Arrangement of a Registrant.
The
      discussion under Item 1.01 above is incorporated herein by
      reference.
2
ITEM
      9.01. FINANCIAL STATEMENTS AND EXHIBITS
(d)
      Exhibits
4.
Revolving
                Credit Agreement, dated as of June 15, 2006, among Arch Chemicals,
                Inc.,
                the Lenders Party thereto, JPMorgan Chase Bank, N.A., as Administrative
                Agent, J.P. Morgan Securities Inc., as Joint Lead Arranger and Joint
                Book
                Manager, Banc of America Securities, L.L.C., as Joint Lead Arranger
                and
                Joint Book Manager, SunTrust Bank, as Documentation Agent, and Bank
                of
America,
                National Association and Citizens Bank of Massachusetts, as Co-Syndication
                Agents.
3
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.
Date: June
              20, 2006
ARCH
              CHEMICALS,
              INC.
By:
/s/ Louis
              S.
              Massimo
Name:
Louis
              S. Massimo
Title:
Executive
              Vice
              President and Chief Financial Officer
4
Exhibit
      Index
Exhibit No.
Description
4.
Revolving
                Credit Agreement, dated as of June 15, 2006, among Arch Chemicals,
                Inc.,
                the Lenders Party thereto, JPMorgan Chase Bank, N.A., as Administrative
                Agent, J.P. Morgan Securities Inc., as Joint Lead Arranger and Joint
                Book
                Manager, Banc of America Securities, L.L.C., as Joint Lead Arranger
                and
                Joint Book Manager, SunTrust Bank, as Documentation Agent, and Bank
                of
                America, National Association and Citizens Bank of Massachusetts,
                as
                Co-Syndication Agents.
5