(DALLAS) Sept. 6, 2006 – Celanese Chemicals, a global leader in polymer emulsions, announced today that it will increase the price of all PVAc homopolymer, VAE co-polymer, acrylic and vinyl-acrylic emulsions sold in North America by up to 10 percent. This increase applies to all applications.

The increase will be effective for shipments on or after Oct. 1, 2006, or as contracts allow. Pricing will reflect unique technology and delivery requirements for each product. The increase is primarily necessitated by sustained increases in raw materials, freight and energy costs. Additionally, a number of raw material suppliers have recently announced force majeure.

Customers should contact their Celanese sales representative to learn more about this matter.

About the Emulsions & PVOH Business of Celanese
The Emulsions & PVOH business of Celanese is a global leader in the development and application of polymer emulsion and PVOH technology to improve performance, create value and drive innovation in a broad range of industrial and consumer end-use applications including adhesives, coatings, engineered fabrics, glass fibers, paper, textiles and more. The business has 14 manufacturing facilities and seven R&D Centers of Excellence in North America, Europe and Asia. More information about the Emulsions & PVOH business of Celanese is available at www.connectcelanese.com.

About Celanese
As a global leader in the chemicals industry, Celanese Corporation (NYSE: CE) 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, the company employs approximately 9,300 employees worldwide. For more information on Celanese Corporation, please visit the company's website at www.celanese.com.