LIMITED POWER OF ATTORNEY FOR

SECTION 16 REPORTING OBLIGATIONS
Know all by these presents that the undersigned hereby makes, constitutes and



appoints Robert L. Villasenor, Alexander M Ludlow or Curtis S. Shaw as the

undersigned's true and lawful attorney-in-fact, with full power and authority

as hereinafter described on behalf of and in the name, place and stead of the

undersigned to:
(1) prepare, execute, acknowledge, deliver and file Forms 3, 4, and 5

(including any amendments thereto) with respect to the securities of Celanese

Corporation, a Delaware corporation (the "Company"), with the United States

Securities and Exchange Commission and any national securities exchanges, as

considered necessary or advisable under Section 16(a) of the Securities

Exchange Act of 1934 and the rules and regulations promulgated thereunder, as

amended from time to time (the "Exchange Act");
(2) seek or obtain, as the undersigned's representative and on the

undersigned's behalf, information on transactions in Celanese's securities

from any third party, including brokers, employee benefit plan administrators

and trustees, and the undersigned hereby authorizes any such person to

release any such information to the undersigned and approves and ratifies any

such release of information; and
(3) perform any and all other acts which in the discretion of such attorney-

in-fact are necessary or desirable for and on behalf of the undersigned in

connection with the foregoing.
The undersigned acknowledges that:
(1) this Power of Attorney authorizes, but does not require, such attorney-

in-fact to act in their discretion on information provided to such attorney-

in-fact without independent verification of such information;
(2) any documents prepared and/or executed by such attorney-in-fact on behalf

of the undersigned pursuant to this Power of Attorney will be in such form

and will contain such information and disclosure as such attorney-in-fact, in

his or her discretion, deems necessary or desirable;
(3) neither Celanese nor such attorneys-in-fact assumes (i) any liability for

the undersigned's responsibility to comply with the requirement of the

Exchange Act, (ii) any liability of the undersigned for any failure to comply

with such requirements, or (iii) any obligation or liability of the

undersigned for profit disgorgement under Section 16(b) of the Exchange Act;

and
(4)this Power of Attorney does not relieve the undersigned from

responsibility for compliance with the undersigned's obligations under the

Exchange Act, including without limitation the reporting requirements under

Section 16 of the Exchange Act.
The undersigned hereby gives and grants the foregoing attorney-in-fact full

power and authority to do and perform all and every act and thing whatsoever

requisite, necessary or appropriate to be done in and about the foregoing

matters as fully to all intents and purposes as the undersigned might or

could do if present, hereby ratifying all that such attorney-in-fact of, for

and on behalf of the undersigned, will lawfully do or cause to be done by

virtue of this Power of Attorney.
This Power of Attorney will remain in full force and effect until revoked by

the undersigned in a signed writing delivered to such attorney-in-fact.
IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be

executed as of the date set forth below.


/s/ Steven M. Sterin        

Signature
Name: Steven M. Sterin

Dated: January 4, 2008
Witness:


/s/ Alexander M Ludlow        

Signature
Name: Alexander M Ludlow

Dated: January 4, 2008