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22661177..00000011 E`E2xx6hh1iibb7iitt 2617 State of Minnesota v. 3M Co., Court File No. 27-CV-10-28862 STUDY SUMMARY FOR WORK PERFORMED DURING 1977-1979 TEST SUBSTANCE Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4.4,5,5.6,6,7.7,88,8- heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks field: The test substance is a white powder of uncharacterized purity.

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