BIODEGRADATION (BOD/COD) TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may also be referredtoas PFOS, FC-95, oras a component ofFC-206C and L-5439. (1-Octanesulfoniacdid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafploutoarsos-i,um salt,CAS # 2795-39-3) Remarks: The 3M productionlotnumber was 501.The testsample is referredtoas L-5439 and FC-206C.

TOXICITY TO AQUATIC PLANTS TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatmea;y alsobe referredtoas PFOS, FC-95, oras a component ofFC-206C and 81-2/8.(1-Octanesulfoniaccid, 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafploutoarsos-i,um salt,CAS # 2795-39-3) Remarks: The testsample isFC-206C.

AR 226 - 0838 ACUTE TOXICITY TO FISH (FATHEAD MINNOW) TESTSUBSTANCE Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-600. (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 not noted.

AR 226 0868 BIODEGRADATION (BOD/COD) EST SUBSTANCE Identity: A mixture containing perfiuorooctanesulfonate, which may also be referredtoas PFOS, FC-95, or as a component of FC-780. (1- Octanesulfonic acid) (CAS # 2795-39-3).

AR226-2775 FOR DU FONT USE ONLY I.

internCaolrrespondence rc: P.

SUMMARY FOR WORK PERFORMED BY THE GERMAN ARMY ON FOAM EXTINGUISHING AGENTS MANUFACTURED BY MULTIPLE COMPANIES TEST SUBSTANCE Identity:A mixturecontainingperiulorooctanesulfonatew,hich may also be referredtoas PFOS, FC-95, or as a component of FC-206. (1-Octanesulfoniacid)(CAS # 2795-39-3).

BIODEGRADATION (BOD/COD) TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatweh;i,chmay alsobe referredtoas PFOS, FC-95, or as a component ofFX-3106. (1Octanesulfoniaccid)(CAS # 2795-39-3).

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ACUTE TOXICITY TO FISH TEST SUBSTANCE Identity:N-Ethylperfluorooctanesulfonamidmea;y alsobe referredtoas U 1464, ETFOSA, ETPOSA, F-6309,or FX-1 2. (1Octanesulfonamide,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8heptadecafluoro-N-ethyl-C,AS # 4151-50-2) Remarks: Materialisa white solid,lot505 (cc842-3,F6309, L-1089).

InternCaolrrespondence To:P.

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