Webcast Alert: Lyondell President & Chief Executive Officer to Address Smith Barney Citigroup 2005 Small & Mid-Cap Conference

HOUSTON, Feb. 7 /PRNewswire-FirstCall/ -- Dan F. Smith, President and Chief Executive Officer of Lyondell Chemical Company (NYSE: LYO), will address analysts at the following event:

     Analyst
     Conference:    Smith Barney Citigroup 2005 Small and Mid-Cap Conference
                    in Las Vegas, Thursday, February 17, 2005, at 11:25 a.m.
                    Pacific Time.

     Web Site
     Access:        Live audio-only webcasting will be provided in
                    RealPlayer(TM) and Windows Media formats.  Beginning at
                    11:25 a.m. Pacific Time on the day of the event, the
                    webcast can be accessed at
                    http://www.lyondell.com/investorpresentations .

                    The replay webcast will be available by 2:00 p.m. Pacific
                    Time on February 17, 2005 at
                    http://www.lyondell.com/investorpresentations .
                    The replay will be available until March 17, 2005.

     Presentation:  The slides will be available at the time of the
                    presentation and afterwards at
                    http://www.lyondell.com/investorpresentations .

     Related
     Disclosures:   Reconciliations of non-GAAP financial measures to GAAP
                    financial measures and any other applicable disclosures
                    (including the slides) will be available at the time of
                    the presentations and afterwards at
                    http://www.lyondell.com/investorpresentations .

    ABOUT LYONDELL

Lyondell Chemical Company, headquartered in Houston, Texas, is North America's third-largest independent, publicly traded chemical company. Lyondell is a major global manufacturer of basic chemicals and derivatives including ethylene, propylene, titanium dioxide, styrene, polyethylene, propylene oxide and acetyls. It also is a significant producer of gasoline blending components. The company has a 58.75 percent interest in LYONDELL- CITGO Refining LP, a refiner of heavy, high-sulfur crude oil. As a result of Lyondell's November 30, 2004 acquisition of Millennium Chemicals Inc., Millennium and Equistar Chemicals, LP are wholly owned subsidiaries of Lyondell. Lyondell is a global company operating on five continents and employs approximately 10,000 people worldwide.

SOURCE: Lyondell Chemical Company

CONTACT: media, Susan P. Moore, +1-713-309-4645, or investors, Douglas J. Pike, +1-713-309-4590, both of Lyondell Chemical Company

Web site: http://www.lyondell.com

http://www.lyondell.com/investorpresentations

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