AR *5 6 -o s y ^ ACTIVATED SLUDGE RESPIRATION INHIBITION TEST TEST SUBSTANCE___________________________ Identity: A mixture containing perfiuorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-206CE. (1Octanesulfonic acid) (CAS # 2795-39-3).

/tC O N F ID E N T IA L Internal Correspondence 3M TO: FROM: SUBJECT: DATE: R.

MILITARY SPECIFICATION MIL-F-24385F FIRE EXTINGUISHING AGENT, AQUEOUS FILM FORMING FORM (AFFF) LIQUID CONCENTRATE, FOR FRESH AND SEAWATER Patricia A.

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fe-y AIR/WATER PARTITION COEFFICIENT ITEESSTSSUUBSTTAANNCCEE ~~~ =000000000 Identity: PFeCr-f9l5u.oro(o1c-tOacnteasnuelsfuolnfaotnei;c macaiyd,a1l,s1o,2b,e2,r3e,f3e.r4r,e4d,5t,o5a.6s.6P,7F,O7.S8,o8r,6- heptadecafiuoro-, potassium salt, CAS #2795-39-3) Remarks: The test substance is a white powder.

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BOILING POINT EST SUBSTANCE Identity: N-ethylperfluorooctane sulfonamidoethanol; may also be referred to as N-EtFOSE Alcohol, FC-10, or FM-3422. (1-Octanesulfonamide, N- ethyl-1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafiuoro-N-(2hydroxyethyl)-, CAS # 1691-99-2) Remarks: Material is an off-white, waxy solid.

STABILITY IN WATER (HYDROLYSIS) TEST SUBSTANCE Identity: N2-(N-methylperfluorooctanesulfonamido)-ethyl acrylate; may also be referred to as N-MeFOSEA, or MeFOSEA. (2-Propenoic acid, 2- [I(heptadecafluorooctyl)sulfonyllmethylaminoethyl ester, CAS # 25268-77-3) Remarks: Material is an amber, waxy solid, coded THAR3F2.

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3M Chemicals S3tMPCaueln,teMrN 55144-1000 612733 1110 AR 226 _ 0624 am December 21, 1998 Mr.

AR 226 _ 088I ACUTE TOXICITY TO FISH (FATHEAD MINNOW) IEST~ S ~U ~ BSTANC0 G 0E 00 Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-787 or FC787X. (1-Octanesulfonic acid) (CAS # 2795-39-3).

BACK TO MAIN VAPOR PRESSURE 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: The 3M production lot number was not noted.

AR226-2076 3<]K?

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AR226-3070 DuPontHL-1997-00260 HASKELL LABORATORY FOR TOXICOLOGY AND INDUSTRIAL MEDICINE STATIC, ACUTE 96-HOUR SCREENING TEST OF H.22274 TO FATHEAD MINNOWS, PhneolMto proroehB PURPOSE: This is a rangefinding study designedto provide an estimate of aquatictoxicity using fixed test concentrations and data measurements at predetennined intervals.