TRADE SECRET AR226-3182 DuPont-6711 Study Title Jff^ Acute Oral Toxicity Fixed Dose Method Laboratory Project ID: DuPont-6711 TEST GUIDELINE: OECD Guidelines for Testing of Chemicals Section 4: Health Effects, No. 420 (1992) AUTHOR: Carol Finlay, B.A.

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I I PFOS: A 96-Hour StaticAcute ToxicityTest with the Freshwater Mussel (Unio complamatus) I ACUTE TOXICITY TO AQUATIC INVERTEBRATES MUSSEL) (FRESHWATER TEST SUBSTANCE Identity:Perfluorooctanesulfonatmea;y alsobe referredtoas PFOS or FC-95. (1-Octanesulfoniaccid,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-p,otassium saltC,AS # 2795-39-3) Remarks: The testsubstance isa whitepowder.

OTHER "AILABLE STUDY SUMMARIES FOR N-ETFOSE ALCOHOL TEST SUBSTANCE Identity:N-ethylperfluorooctanseulfonamidoethanolm;ay alsobe referredtoas N-ETFOSE Alcoholor FM-3422. (1-Octanesulfonamide,N-ethyi1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-N-(2-hydroxyethyl)-, CAS # 1691-99-2) Remarks: Materialisan off-whitew,axy solidofuncharacterizedpurity.

FINAL'REPORT ACUTE INHALATION TOXICITY STUDY IN RATS T-2991!

B 10 - T E S T 1810 FRONTAGE ROAD NORTHBROOK.

CorporatOeccupationMaelWcine 3M CenterB,uildin2g20-3W-05 St.PaulM,N 55144-1000 651'/'4j2730Telephone 6517339066Fax 3.

Final BiologicalPhase Report Metal-)oli.

ACUTE TOXICITY TO AQUATIC INVERTEBRATES (ACARTIA TONSA) TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may also be referredto as PFOS, FC-95 or as a component of FC-201AF. (1Octanesulfonicacid)(CAS # 2795-39-3).

ACUTE TOXICITY TO FISH (FATHEAD MINNOW) TEST SUBSTANCE Identity:Mixturecontainingperfluorooctanesulfonawtheich may alsobe referredto as PFOS, FC-95, or as a component of FC-203FC. (1Octanesulfoniaccid)(CAS # 2795-39-3).

ACUTE TOXICITY TO AQUATIC INVERTEBRATES (DAPHNIA MAGNA) TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may alsobe referredtoas PFOS, FC-95, or as a component of FC-602. (1Octanesulfonicacid)(CAS # 2795-39-3).