DALLAS, Nov. 21, 2007 – Celanese, 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 $0.05/wet pound. This increase applies to all applications. The increase will be effective for shipments on or after Dec. 15, 2007, or as contracts allow. Pricing will reflect unique technology and delivery requirements for each product.

This increase is in addition to the ones previously announced effective for July 1 and October 15 of this year.

“This price increase is driven primarily by continued, significant increases in raw materials, feedstocks, transportation and energy costs,” said Phil McDivitt, vice president of Celanese’s Emulsions business.

About the Emulsions & PVOH Businesses of Celanese
The Emulsions & PVOH businesses of Celanese are global leaders 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 businesses have manufacturing, R&D and technical service facilities across North America, Europe and Asia. More information is available at www.celanese-emulsions.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 totalled $6.7 billion in 2006, with over 60 percent 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 8,900 employees worldwide. For more information on Celanese Corporation, please visit the company’s website at www.celanese.com .