Exhibit 12.1

Celanese Corporation and Subsidiaries

Statement of Computation of Ratio of Earnings to Fixed Charges

Change in accounting policy regarding pension and other postretirement benefits

Effective January 1, 2013, we elected to change our policy for recognizing actuarial gains and losses and changes in the fair value of plan assets for our defined benefit pension plans and other postretirement benefit plans. We now immediately recognize in operating results net actuarial gains and losses and the change in fair value of plan assets annually in the fourth quarter of each fiscal year and whenever a plan is required to be remeasured. The remaining components of our net periodic benefit cost are recorded on a quarterly basis. Financial information for prior periods has been retrospectively adjusted.

	Year Ended December 31,
	2013		2012		2011		2010		2009
	(In $ millions, except ratios)
Earnings:
Earnings (loss) from continuing operations before tax	1,609		321		467		433		105
Subtract
Equity in net earnings of affiliates	(180	)	(242	)	(192	)	(168	)	(99	)
Add
Income distributions from equity investments	141		262		205		138		78
Amortization of capitalized interest	3		2		2		2		2
Total fixed charges	234		247		283		262		268
Total earnings as defined before fixed charges	1,807		590		765		667		354
Fixed charges:
Interest expense	172		185		221		204		207
Capitalized interest	9		7		4		2		2
Estimated interest portion of rent expense	53		55		58		53		49
Cumulative preferred stock dividends	—		—		—		3		10
Guaranteed payment to minority shareholders	—		—		—		—		—
Total fixed charges	234		247		283		262		268
Ratio of earnings to fixed charges	7.7x		2.4x		2.7x		2.5x		1.3x