Celanese Corporation to Host 2006 Investor Day.

DALLAS -- Celanese Corporation (NYSE: CE), a global hybrid chemical company, today announced that it will hold its 2006 Investor Day on Wednesday, December 13, 2006 in New York City. David N. Weidman, president and chief executive officer of Celanese Corporation, will host the event. Weidman and Celanese business leaders will present the companyeIUs strategy for earnings growth and 2007 outlook.

Presentations will be given from 8:30 a.m. until 11:45 Eastern Standard Time and will be webcast live on www.celanese.com in the investor section. Presentation materials will be available approximately 30 minutes prior to the start of the webcast. A replay of the webcast will also be available on the same website.

As a global leader in the chemicals industry, Celanese Corporation makes products essential to everyday living. Our products, found in consumer and industrial applications, are manufactured in North America, Europe and Asia. Net sales totaled $6.1 billion in 2005, with approximately 60% generated outside of North America. Known for operational excellence and execution of its business strategies, Celanese delivers value to customers around the globe with innovations and best- in-class technologies. Based in Dallas, Texas, the company employs approximately 9,300 employees worldwide. For more information on Celanese Corporation, please visit the company's website at www.celanese.com.

Forward-looking statements (statements which are not historical facts) in this release are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Investors are cautioned that all forward-looking statements involve risks and uncertainties, including those risks and uncertainties detailed in the CompanyeIUs filings with the Securities and Exchange Commission, copies of which are available from the Company.