BACK TO MAIN ACUTE ORAL TOXICITY TO TERRESTRIAL INVERTEBRATES (HONEY BEE) TEST SUBSTANCE Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks field: The 3M production lot number was 217.

BACK TO MAIN TOXICITY TO AQUATIC PLANTS (Marine Diatom, Skeletonema costatum) TEST SUBSTANCE______________________________________ Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: Sample from 3M production lot number 217.

3M Medical Department Study: T-6295.12 BACK TO MAIN Analytical Report: FACT T O X -110 LRN-U2849 Study Title Oral (Gavage) Pharmacokinetic Study of PFOS in Rats Analytical Laboratory Report Title Determination of the Presence and Concentration of Perfluorooctanesulfonate (PFOS) in Serum, Liver, Urine, and Feces Samples Data Requirement Not Applicable A u th o r 3M Environmental Laboratory Study Completion Date at signing Performing Laboratories Urine Analyses Feces Analyses 3M Environmental Laboratory Building 2-3E-09, 935 Bush Avenue St.

BACK BIODEGRADATION TEST SUBSTANCE Identity: Remarks: Perfluorooctanesulfonamide; may also be referred to as FOSA or F-10105 (1-Octanesulfonamide, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro, CAS # not available) FOSA was a light yellow waxy solid.

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/IRVi- BIODEGRADATION TEST SUBSTANCE Identity: Perfluorodecanesulfonate, ammonium salt; may also be referred to as PFDS, FC-121-X, or 3M Sample E2112 and E2566-1. (1Decanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heneicosafluoro-, ammonium salt, CAS # 67906-42-7) Remarks: Test sample is a mixture of the test substance in water and 2propanol, 1-(1,1-dimethylethoxy).

/IRlK-O%& 3M MEDICAL DEPARTMENT TOXICOLOGY SERVICES To: Geoijean Adams 290-4-01 cc: John ButenhofF 220-2E-02 From: Marv Case 220-2E-02 Subject: FC 95 and 143 Teratology Date: 26 May 1998 John passed on to me your request for someone to review and write an analysis on the eye lens defect that was reported in the original FC 95 rat teratology study.

M & U 6 - 07LO MICROBIAL INHIBITION (DEHYDROGENASE ACTIVITY TEST) TEST SUBSTANCE________________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-203. (1Octanesulfonic acid) (CAS # 2795-39-3).

AR A S - 0 7 & O MICROBIAL INHIBITION (DEHYDROGENASE ACTIVITY TEST) TEST SUBSTANCE____________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-206 or L3243. (1-Octanesulfonic acid) (CAS # 2795-39-3).

M 0802s ACTIVATED SLUDGE RESPIRATION INHIBITION TEST TEST SUBSTANCE____________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-206C and L-5439. (1-Octanesulfonic acid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-, potassium salt, CAS # 2795-39-3) Remarks: The 3M production lot number was 501.

AR A A S _ C& 0 3 ACUTE TO XICITY TO AQUATIC INVERTEBRATES (DAPHNIA MAGNA) TEST SUBSTANCE_______________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-206CE. (1Octanesulfonic acid) (CAS # 2795-39-3).

MICROBICS MICROTOX TO XIC ITY TEST TEST SUBSTANCE_______________________________________________ Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-206CE. (1Octanesulfonic acid) (CAS # 2795-39-3).

B IO D EG R A D A T IO N (301E) TEST SUBSTANCE Identity: A mixture containing perfluorooctanesulfonate, which may a lso be referred to a s P F O S , FC -95, or a s a com ponent of FC -3017. (1Octanesulfonic a d d ) (C A S # 2795-39-3).