CELANESE AG : Crystal US Holdings 3 L.L.C. et Crystal US Sub 3 Corp. prolongent l'offre publique d'?change sur leurs obligations prioritaires ? 10 % de s?rie A

( BW)(TX-CELANESE)(CE) Crystal US Holdings 3 L.L.C. and Crystal US Sub 3 Corp. Extend Exchange Offer for Their 10% Series A Senior Discount Notes Due 2014 and 10 1/2% Series B Senior Discount Notes Due 2014

Business Editors

DALLAS--(BUSINESS WIRE)--May 31, 2005--Crystal US Holdings 3 L.L.C. and Crystal US Sub 3 Corp., subsidiaries of Celanese Corporation (NYSE:CE), announced today that they extended the expiration date of their offer to exchange all of their outstanding 10% Series A Senior Discount Notes due 2014 and 10 1/2% Series B Senior Discount Notes due 2014 (collectively, the "Outstanding Notes") for an equal principal amount at maturity of their 10% Series A Senior Discount Notes due 2014 and 10 1/2% Series B Senior Discount Notes due 2014, respectively, which have been registered under the Securities Act of 1933 (collectively, the "Exchange Notes").

As a result of the extension, the exchange offer is now scheduled to expire at 5 p.m., New York City time, on June 7, 2005, unless further extended

The exchange offer was originally set to expire at 5:00 p.m., New York City time, on May 27, 2005. As of this date, tenders of approximately $95.1 million aggregate principal amount at maturity, or 89.8%, of the outstanding 10% Series A Senior Discount Notes due 2014 and approximately $441.8 million aggregate principal amount at maturity, or 98.5%, of the outstanding 10 1/2% Series B Senior Discount Notes due 2014, in each case excluding tenders pursuant to the guaranteed delivery procedure, have been received pursuant to the exchange offer. Except for the extension of the expiration date, all of the other terms of the exchange offer remain as set forth in the exchange offer prospectus.

This press release is not an offer to exchange the Exchange Notes for the Outstanding Notes or the solicitation of an offer to exchange, which we are making only through the exchange offer prospectus

Copies of the exchange offer prospectus and related documents may be obtained from The Bank of New York, as exchange agent for the exchange offer, at the following address: