Celanese Corporation (NYSE: CE), a global technology and specialty materials company, announced today that Doug Madden will retire as the company’s chief operating officer effective March 31, 2013. “I’d like to thank Doug for his significant contribution to Celanese over the last 28 years,” said Mark Rohr, chairman and chief executive officer. “He’s a true leader, focusing on performance and people. Across multiple departments and divisions he has helped this company excel and expand year after year. We owe him our gratitude and wish him well.” Madden joined Celanese in 1984 as manager of corporate distribution. Since then he has held numerous positions of increasing responsibility and scope including vice president and general manager positions in Celanese Chemicals, Celanese Fibers and Advanced Engineered Materials. He has been president of the company’s Acetate business since 2003 and president of the AT Plastics and Emulsions businesses since 2006. In 2008 he was named executive vice president for the Corporation and was named COO in 2009. About Celanese Celanese Corporation is a global technology leader in the production of specialty materials and chemical products that are used in most major industries and consumer applications. Our products, essential to everyday living, are manufactured in North America, Europe and Asia. Known for operational excellence, sustainability and premier safety performance, Celanese delivers value to customers around the globe with best-in-class technologies. Based in Dallas, Texas, the company employs approximately 7,600 employees worldwide and had 2011 net sales of $6.8 billion, with approximately 73% generated outside of North America. For more information about Celanese Corporation and its global product offerings, visit www.celanese.com or the company’s blog at www.celaneseblog.com . Forward-Looking Statements This release may contain “forward-looking statements,” which include information concerning the company’s plans, objectives, goals, strategies, future revenues or performance, capital expenditures, financing needs and other information that is not historical information. When used in this release, the words “outlook,” “forecast,” “estimates,” “expects,” “anticipates,” “projects,” “plans,” “intends,” “believes,” and variations of such words or similar expressions are intended to identify forward-looking statements. All forward-looking statements are based upon current expectations and beliefs and various assumptions. There can be no assurance that the company will realize these expectations or that these beliefs will prove correct. There are a number of risks and uncertainties that could cause actual results to differ materially from the forward-looking statements contained in this release. Numerous factors, many of which are beyond the company’s control, could cause actual results to differ materially from those expressed as forward-looking statements. Certain of these risk factors are discussed in the company’s filings with the Securities and Exchange Commission. Any forward-looking statement speaks only as of the date on which it is made, and the company undertakes no obligation to update any forward-looking statements to reflect events or circumstances after the date on which it is made or to reflect the occurrence of anticipated or unanticipated events or circumstances. Celanese® is a registered trademark of Celanese International Corporation.