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<B><P ALIGN="CENTER">UNITED STATES</P>


<P ALIGN="CENTER">SECURITIES AND EXCHANGE COMMISSION</P>


<P ALIGN="CENTER">Washington, D.C. 20549</P>


</B><P ALIGN="CENTER"></P>


<B><P ALIGN="CENTER">FORM 8-K</P>


<P ALIGN="CENTER"></P>


</B><P ALIGN="CENTER">Current Report </P>


<P ALIGN="CENTER">Pursuant to Section </P>


<P ALIGN="CENTER">3 or 15(d) of the</P>


<P ALIGN="CENTER">Securities Exchange Act of 1934</P>


<P ALIGN="CENTER"></P>


<P ALIGN="CENTER">&nbsp;</P>


<P ALIGN="CENTER">Date of Report (date of earliest event reported): February 4, 2005</P>


<P ALIGN="CENTER"></P>


<P ALIGN="CENTER">&nbsp;</P>


<B><FONT SIZE=5><P ALIGN="CENTER">LYONDELL CHEMICAL COMPANY</P>


</B></FONT><P ALIGN="CENTER">(Exact name of registrant as specified in its charter)</P>


<P ALIGN="CENTER"></P>


<B><P ALIGN="CENTER">Delaware</P>


</B><P ALIGN="CENTER">(State or other jurisdiction of incorporation)</P>


<P ALIGN="JUSTIFY"></P>


<P ALIGN="JUSTIFY">&#9;<B>1-10145&#9;&#9;&#9;&#9;&#9;&#9;&#9;&#9;95-4160558</P>


</B><P ALIGN="JUSTIFY">(Commission File Number)&#9;&#9;&#9;&#9;&#9;(I.R.S. Employer Identification No.)</P>


<P ALIGN="JUSTIFY"></P>


<P ALIGN="JUSTIFY">&nbsp;</P>


<B><P ALIGN="JUSTIFY">1221 McKinney Street, Suite 700, Houston, Texas&#9;&#9;&#9;   77010</P>


</B><P ALIGN="JUSTIFY">&#9;(Address of principal executive offices)&#9;&#9;&#9;&#9;(Zip Code)</P>


<P ALIGN="JUSTIFY"></P>


<B><P ALIGN="CENTER">(713) 652-7200</P>


</B><P ALIGN="CENTER">(Registrant's telephone number, including area code)</P>


<P ALIGN="CENTER"></P>


<B><P ALIGN="CENTER">Not Applicable</P>


</B><P ALIGN="CENTER">(Former Name or Former Address, if Changed Since Last Report)</P>


<P ALIGN="CENTER"></P>


<P ALIGN="JUSTIFY">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 (<I>see </I>General Instruction A.2. below):</P>


<P ALIGN="JUSTIFY"></P>


<P ALIGN="JUSTIFY">&#9;<FONT FACE="Wingdings">&#111;</FONT>


&#9;Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</P>


<P ALIGN="JUSTIFY"></P>


<P ALIGN="JUSTIFY">&#9;<FONT FACE="Wingdings">&#111;</FONT>


&#9;Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</P>


<P ALIGN="JUSTIFY"></P>


<P ALIGN="JUSTIFY">&#9;<FONT FACE="Wingdings">&#111;</FONT>


&#9;Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</P>


<P ALIGN="JUSTIFY"></P>


<P ALIGN="JUSTIFY">&#9;<FONT FACE="Wingdings">&#111;</FONT>


&#9;Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</P>


<P ALIGN="JUSTIFY">The description set forth below is qualified in its entirety by the full text of the document to which it refers, which document is filed herewith.</P>


<B><P ALIGN="JUSTIFY"></P>


<P ALIGN="JUSTIFY">&nbsp;</P>


<P ALIGN="JUSTIFY">Item 1.01&#9;Entry into a Material Definitive Agreement</P>


</B><P ALIGN="JUSTIFY"></P>


<P ALIGN="JUSTIFY">On February 2, 2005, Millennium Chemicals Inc. (&quot;Millennium&quot;), a wholly owned subsidiary of Lyondell Chemical Company, entered into an Amendment and Waiver (the &quot;Amendment&quot;) to its Credit Agreement, dated June 18, 2001 among Millennium America Inc., as Borrower, Millennium Inorganic Chemicals Limited, as Borrower, certain borrowing subsidiaries of Millennium, from time to time party thereto, Millennium, as Guarantor, the lenders from time to time party thereto, Bank of America, N.A., as Syndication Agent and JPMorgan Chase Bank, N.A., as Administrative Agent and Collateral Agent.&nbsp; The Amendment amended the definition of EBITDA and waived any and all defaults and events of default that may have occurred on or prior to the Amendment as a result of certain adjustments and charges.</P>


<P ALIGN="JUSTIFY"></P>


<P ALIGN="JUSTIFY">The Amendment is being filed with this Current Report on Form 8-K as Exhibit 4.28(f).</P>


<P ALIGN="JUSTIFY"></P>


<B><P ALIGN="JUSTIFY">Item 9.01&#9;Financial Statements and Exhibits</P><DIR>


<DIR>





</B><P ALIGN="JUSTIFY">(c)&#9;Exhibits</P><DIR>


<DIR>


<DIR>


<DIR>


<DIR>


<DIR>





<P ALIGN="JUSTIFY">4.28(f)&#9;Sixth Amendment and Waiver, dated as of February 2, 2005, to the Credit Agreement dated as of June 18, 2001, with the Bank of America, N.A., and JP Morgan Chase Bank and the lenders party thereto</P>


<P ALIGN="JUSTIFY"></P>


<P>&nbsp;</P>


<P ALIGN="JUSTIFY">&nbsp;</P></DIR>


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<B><P ALIGN="CENTER">SIGNATURE</P>


</B><P ALIGN="JUSTIFY"></P>


<P ALIGN="JUSTIFY">&nbsp;</P>


<P ALIGN="JUSTIFY">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.</P>


<P ALIGN="JUSTIFY"></P>


<P ALIGN="JUSTIFY">&#9;&#9;&#9;&#9;&#9;&#9;&#9;LYONDELL CHEMICAL COMPANY</P>


<P ALIGN="JUSTIFY"></P>


<P ALIGN="JUSTIFY">&nbsp;</P>


<P ALIGN="JUSTIFY">&nbsp;</P>


<P ALIGN="JUSTIFY">&#9;&#9;&#9;&#9;&#9;&#9;&#9;By:<U>&#9;/s/ Kerry A. Galvin&#9;&#9;&#9;</P>


</U><P ALIGN="JUSTIFY">&#9;&#9;&#9;&#9;&#9;&#9;&#9;Name:&#9;Kerry A. Galvin</P>


<P ALIGN="JUSTIFY">&#9;&#9;&#9;&#9;&#9;&#9;&#9;Title:&#9;Senior Vice President, General &#9;&#9;&#9;&#9;&#9;&#9;&#9;&#9;&#9;Counsel &amp; Secretary</P>


<P ALIGN="JUSTIFY">&#9;&#9;&#9;&#9;&#9;&#9;&#9;&#9;</P>


<P ALIGN="JUSTIFY"></P>


<P ALIGN="JUSTIFY">&nbsp;</P>


<P ALIGN="JUSTIFY">Date:  February 4, 2005</P>


<FONT FACE="Arial" SIZE=1><P ALIGN="CENTER"></P>


</FONT><B><P ALIGN="CENTER">INDEX TO EXHIBITS</P>


</B><P ALIGN="CENTER"></P>


<P>Exhibit</P>


<U><P>Number</U>&#9;&#9;<U>Description</P>


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<DIR>


<DIR>


<DIR>


<DIR>


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</U><P ALIGN="JUSTIFY">4.28(f)&#9;Sixth Amendment and Waiver, dated as of February 2, 2005, to the Credit Agreement dated as of June 18, 2001, with the Bank of America, N.A., and JP Morgan Chase Bank and the lenders party thereto</P>


<P ALIGN="JUSTIFY"></P></DIR>


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{"company-data": {"conformed-name": "LYONDELL CHEMICAL CO", "cik": "0000842635", "assigned-sic": "2860", "irs-number": "954160558", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-10145", "film-number": "05575705"}, "business-address": {"street1": "1221 MCKINNEY ST", "street2": "SUITE 700", "city": "HOUSTON", "state": "TX", "zip": "77010", "phone": "713-652-7200"}, "mail-address": {"street1": "1221 MCKINNEY ST", "street2": "SUITE 700", "city": "HOUSTON", "state": "TX", "zip": "77010"}, "former-company": {"former-conformed-name": "LYONDELL PETROCHEMICAL CO", "date-changed": "19920703"}}
SECURITIES AND EXCHANGE COMMISSION
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
Current Report
Pursuant to Section
3 or 15(d) of the
Securities Exchange Act of 1934
Date of Report (date of earliest event reported): February 4, 2005
LYONDELL CHEMICAL COMPANY
(Exact name of registrant as specified in its charter)
Delaware
(State or other jurisdiction of incorporation)
1-10145								95-4160558
(Commission File Number)					(I.R.S. Employer Identification No.)
1221 McKinney Street, Suite 700, Houston, Texas			   77010
(Address of principal executive offices)				(Zip Code)
(713) 652-7200
(Registrant's telephone number, including area code)
Not Applicable
(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))
The description set forth below is qualified in its entirety by the full text of the document to which it refers, which document is filed herewith.
Item 1.01	Entry into a Material Definitive Agreement
On February 2, 2005, Millennium Chemicals Inc. ("Millennium"), a wholly owned subsidiary of Lyondell Chemical Company, entered into an Amendment and Waiver (the "Amendment") to its Credit Agreement, dated June 18, 2001 among Millennium America Inc., as Borrower, Millennium Inorganic Chemicals Limited, as Borrower, certain borrowing subsidiaries of Millennium, from time to time party thereto, Millennium, as Guarantor, the lenders from time to time party thereto, Bank of America, N.A., as Syndication Agent and JPMorgan Chase Bank, N.A., as Administrative Agent and Collateral Agent.  The Amendment amended the definition of EBITDA and waived any and all defaults and events of default that may have occurred on or prior to the Amendment as a result of certain adjustments and charges.
The Amendment is being filed with this Current Report on Form 8-K as Exhibit 4.28(f).
Item 9.01	Financial Statements and Exhibits
(c)	Exhibits
4.28(f)	Sixth Amendment and Waiver, dated as of February 2, 2005, to the Credit Agreement dated as of June 18, 2001, with the Bank of America, N.A., and JP Morgan Chase Bank and the lenders party thereto
SIGNATURE
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.
LYONDELL CHEMICAL COMPANY
By:
/s/ Kerry A. Galvin
Name:	Kerry A. Galvin
Title:	Senior Vice President, General 									Counsel & Secretary
Date:  February 4, 2005
INDEX TO EXHIBITS
Exhibit
Number
Description
4.28(f)	Sixth Amendment and Waiver, dated as of February 2, 2005, to the Credit Agreement dated as of June 18, 2001, with the Bank of America, N.A., and JP Morgan Chase Bank and the lenders party thereto