5. Th e registrant’s other certifying offi cer and I have disclosed, based on our most recent evaluation of internal control over fi nancial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions): 

a. All signifi cant defi ciencies and material weaknesses in the design or operation of internal control over fi nancial reporting 

## EXHIBIT 31.2 Chief Financial Officer Certifi cation 

I, W. Kim Foster, 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: 

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 

5. Th e registrant’s other certifying offi cer and I have disclosed, based on our most recent evaluation of internal control over fi nancial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions): 

which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report fi nancial information; and 

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over fi nancial reporting. 

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 

a. All signifi cant defi ciencies and material weaknesses in the design or operation of internal control over fi nancial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report fi nancial information; and 

b. Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over fi nancial reporting. 

Date: February 22, 2011 /s/ W. Kim Foster W. Kim Foster Executive Vice President and Chief Financial Officer 

Date: February 22, 2011 /s/ Pierre R. Brondeau Pierre R. Brondeau President and Chief Executive Officer 

## PART IV 

