Celanese Corporation to Host 2005 Investor Day

Celanese Corporation (NYSE:CE), a global hybrid chemical company, today announced that it will hold its 2005 Investor Day on Tuesday, December 13, 2005 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 company’s strategic outlook and plans to accelerate growth and profitability.

Presentations will be given from 8:15 a.m. until 12:30 p.m. Eastern Standard Time and will be webcast live on www.celanese.com in the investor section. Presentation materials will be available 30 minutes prior to the start of the webcast. A replay of the webcast will also be available at the same Web site.

About Celanese

Celanese Corporation (NYSE:CE) is an integrated global producer of value-added industrial chemicals based in Dallas. The Company has four major businesses: Chemicals Products, Technical Polymers Ticona, Acetate Products and Performance Products. Celanese has production plants in 13 countries in North America, Europe and Asia. In 2004, Celanese Corporation and its predecessor had combined net sales of $5.1 billion. The presentation of combined net sales of Celanese Corporation with its predecessor is not in accordance with U.S. GAAP. For more information on Celanese Corporation including a reconciliation of the combined net sales, please visit the company’s Web site at www.celanese.com.