Lyondell to Repay $500 Million of Outstanding Debt

HOUSTON, June 4 /PRNewswire-FirstCall/ — Lyondell Chemical Company today called all of its $500 million 10.875 percent Senior Subordinated Notes due 2009. The notes will be redeemed at par and the redemption price will be paid on July 5, 2007.

Lyondell Chemical Company, headquartered in Houston, Texas, is North America’s third-largest independent, publicly traded chemical company. Lyondell is a leading global manufacturer of chemicals and plastics, a refiner of heavy, high-sulfur crude oil and a significant producer of fuel products. Key products include ethylene, polyethylene, styrene, propylene, propylene oxide, gasoline, ultra low-sulfur diesel, MTBE and ETBE.

Lyondell Chemical Company

CONTACT: Media, David A. Harpole +1-713-652-4125, or Investors, DouglasJ. Pike +1-713-309-7141, both of Lyondell Chemical Company

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