Celanese Corporation Announces Share Offering.

NEW YORK -- Celanese Corporation (NYSE: CE) announced today that certain of its stockholders had commenced an offering, subject to market and other conditions, of 20,000,000 shares of its class A common stock. The selling stockholders are also expected to grant to the underwriters of this offering an over-allotment option to purchase up to an additional 3,000,000 shares of class A common stock. The Company will not receive any of the proceeds from the offering. Morgan Stanley, Lehman Brothers, Goldman, Sachs & Co., UBS Investment Bank and Merrill Lynch & Co. are acting as joint book running managers for the offering. Deutsche Bank Securities, Credit Suisse First Boston, Bear, Stearns & Co. Inc., ABN AMRO Rothschild LLC and Stephens Inc. are acting as co-managers for the offering.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of these securities in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of any such state or jurisdiction.

A prospectus supplement relating to the offering will be filed with the Securities and Exchange Commission. When available, copies of the prospectus supplement and accompanying base prospectus relating to the offering may be obtained by contacting: Morgan Stanley, Prospectus Department, 1585 Broadway, New York, New York 10036 or Lehman Brothers Inc., c/o ADP Financial Services, Integrated Distribution Services, 1155 Long Island Avenue, Edgewood, New York 11717.