HOUSTON, Nov. 22 /PRNewswire-FirstCall/ -- Dan F. Smith, President and Chief Executive Officer of Lyondell Chemical Company (NYSE: LYO), will address analysts at the following event:

   Analyst          Citigroup's 16th Annual Chemical Conference
   Conference:      in New York, Tuesday, December 6, 2005, at 9:00 a.m. EST

   Web Site Access: Live audio-only webcasting will be provided in
                    RealPlayer™ and Windows Media formats.  Beginning at
                    9:00 a.m. EST on the day of the event, the webcast can
                    be accessed at
                    http://www.lyondell.com/investorpresentations .

                    The replay webcast will be available on
                    December 6, 2005, at
                    http://www.lyondell.com/investorpresentations .
                    The replay will be available until January 5, 2006.

   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