HOUSTON, June 26 /PRNewswire-FirstCall/ -- Lyondell Chemical Company (NYSE: LYO) announced the following schedule and contact information for its second-quarter 2007 earnings release and teleconference:

  Earnings Release:     July 26, 2007
                        8:30 a.m. Eastern Time
                        By PR Newswire distribution and Lyondell web site
                        at http://www.lyondell.com/earnings.

  Teleconference:       July 26, 2007
                        11:30 a.m. Eastern Time
                        Hosted by Doug Pike, Vice President, Investor
                        Relations.
                        Listen-only mode via telephone and Internet
                        broadcast on Lyondell's web site at
                        http://www.lyondell.com/earnings.

  Dial-In Numbers:      U.S. Toll Free: 888-391-2385, Pass Code:  Lyondell
                        International:  517-645-6239, Pass Code:  Lyondell
                        Please call 10 to 15 minutes before the scheduled
                        start of the teleconference.

  Web Replay:           Will be available at 2:30 p.m. Eastern Time on
                        July 26 at http://www.lyondell.com/earnings.

  Telephone Replay:     Will be available from 1:30 p.m. Eastern Time
                        July 26 to 6:00 p.m. Eastern Time on August 3.
                        The dial-in numbers are:
                        United States:  866-513-9969, Pass Code:  5549
                        International:  203-369-1996, Pass Code:  5549

  Related Disclosures:  Reconciliations of non-GAAP financial measures to
                        GAAP financial measures and any other applicable
                        disclosures (including the earnings release) will
                        be available at 11:30 a.m. Eastern Time on
                        July 26 at http://www.lyondell.com/earnings.

(Minimum requirements to listen to broadcast: The Windows Media Player software, downloadable free from http://www.microsoft.com/windows/windowsmedia/default.aspx, and at least a 28.8 Kbps connection to the Internet, or the RealPlayer software, downloadable free from http://www.real.com/products/player/index.html , and at least a 28.8 Kbps connection to the Internet.)

SOURCE: Lyondell Chemical Company; Equistar Chemicals, LP; Millennium

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

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