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Exhibit 99.1 Celanese Celanese Corporation 222 West Las Colinas Blvd. Suite 900N Irving , Texas 75039 Celanese Corporation Reports Third Quarter 2021 Earnings ; Raises Full Year 2021 and 2022 Financial Outlooks Dallas , October 21 , 2021 : Celanese Corporation ( NYSE : CE ) , a global chemical and specialty materials company , today reported third quarter GAAP diluted earnings per share of $ 4.67 and adjusted earnings per share of $ 4.82 . The Company reported record net sales of $ 2.3 billion for the quarter with sequential pricing and volume increases of 3 percent and 1 percent , respectively . Engineered Materials , the Acetyl Chain , and Acetate Tow all navigated growing sourcing and logistics constraints , over $ 100 million in combined sequential cost inflation , and external disruptions to operations to deliver consolidated net earnings attributable to Celanese of $ 506 million and adjusted EBIT of $ 648 million in the third quarter . The Company continued to deploy excess cash generation across capital allocation priorities , including capital expenditures , M & A , and share repurchases , to translate current performance into future earnings growth . " I would like to thank our teams who throughout 2021 have delivered the three highest quarterly adjusted earnings per share performances in our history . Our recent performance is a testament to the agility of Celanese and its people to respond to what was an exceptionally volatile quarter with external challenges and disruptions that negatively impacted all three of our businesses , " said Lori Ryerkerk , chairman and chief executive officer . 1