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NOTE: All subsidiaries listed are greater than 50 percent owned, directly or indirectly, by FMC Corporation as of December 31, 2010. Th  e names of various active and inactive subsidiaries have been omitted. Such subsidiaries, considered in the aggregate as a single subsidiary, would not constitute a signifi cant subsidiary. 

## EXHIBIT 23.1 Consent of Independent Registered Public Accounting Firm 

## The Board of Directors 

## FMC Corporation: 

We consent to incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-18383, 333-69805, 333-69714, and 333- 111456) and the Registration Statements on Form S-3 (Nos. 333- 165066 and 333-59543) of FMC Corporation of our reports dated February 22, 2011 relating to the consolidated balance sheets of FMC Corporation and subsidiaries as of December 31, 2010 and 2009, and the 

## EXHIBIT 31.1 Chief Executive Officer Certifi cation 

I, Pierre R. Brondeau, certify that: 

1. I have reviewed this annual report on Form 10-K of FMC Corporation; 

2. Based on my knowledge, this annual report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this annual report; 

3. Based on my knowledge, the financial statements, and other financial information included in this annual report, fairly present in all material respects the financial condition, results of operations and cash fl ows of the registrant as of, and for, the periods presented in this annual report; 

4. Th e registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have: 

related consolidated statements of income, changes in equity, cash fl ows and comprehensive income for each of the years in the three-year period ended December 31, 2010, and the related financial statement schedule, and the effectiveness of internal control over financial reporting as of December 31, 2010, which reports appear in the December 31, 2010 annual report on Form 10-K of FMC Corporation. 

a. Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this annual report is being prepared; 

b. Designed such internal control over fi nancial reporting, or caused such internal control over fi nancial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles; 

c. Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and 

d. Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter that has materially affected, or is reasonably likely to materially aff ect, the registrant’s internal control over financial reporting; and 

/s/ KPMG LLP Philadelphia, Pennsylvania February 22, 2011 

