HUNT VALLEY, Md., June 28 /PRNewswire-FirstCall/ -- Lyondell Chemical Company (NYSE: LYO) is increasing its prices for all rutile and anatase Tiona® titanium dioxide (TiO2) products sold in North America to all end-use markets, effective July 1, 2006 or as contracts allow, by U.S. 4 cents per pound. Tiona® products are produced and sold by Millennium Inorganic Chemicals Inc., a Lyondell company.

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. Lyondell is a global company operating on five continents and employs approximately 10,000 people worldwide. Millennium Chemicals is a wholly owned subsidiary of Lyondell.

Tiona is a registered trademark of Millennium Chemicals, a Lyondell company.

SOURCE: Lyondell Chemical Company; Millennium Chemicals Inc.

CONTACT: Amy Drusano of Millennium Chemicals Inc., +1-410-229-8062, or
amy.drusano@millenniumchem.com

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