JOINT FILER INFORMATION

Name:	Occidental Chemical Holding Corporation
Address:	10889 Wilshire Boulevard Los Angeles, California 90024
Designated Filer:	Occidental Petroleum Corporation
Issuer & Ticker Symbol:	Lyondell Chemical Company (LYO)
Date of Event Requiring Statement:	2/2/2007
Signature:	OCCIDENTAL CHEMICAL HOLDING CORPORATION
	By:	/s/ JIM A. LEONARD
		Jim A. Leonard Vice President

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JOINT FILER INFORMATION

Name:	Occidental Petroleum Investment Co.
Address:	10889 Wilshire Boulevard Los Angeles, California 90024
Designated Filer:	Occidental Petroleum Corporation
Issuer & Ticker Symbol:	Lyondell Chemical Company (LYO)
Date of Event Requiring Statement:	2/2/2007
Signature:	OCCIDENTAL PETROLEUM INVESTMENT CO.
	By:	/s/ JIM A. LEONARD
		Jim A. Leonard President

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