Webcast Alert: Lyondell Chemical Company Announces Second-Quarter 2007 Teleconference Schedule

HOUSTON, June 26 /PRNewswire-FirstCall/ — Lyondell Chemical Company 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.)

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/