FOR D PONT USE ONLY Copies to AR226-2898 E a I. du Pont de Nemours and Company Haskell Laboratory for Toxicology and Industrial Medicine Elkton Road, Newark, Delaware 19711 HASKELL LABORATORY REPORT NO. 352-81 MR NO Haskell N o .

M A&6 - 0 ALGICIDAL ACTIVITY 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).

M aq.6 _ 0 7 2 7 ACUTE TOXICITY 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-206 or L3243. (1-Octanesulfonic acid) (CAS # 2795-39-3).

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AR260-0350 BIOCONCENTRATION TEST SUBSTANCE Identity: CAS # 1691-09-2) N-ethylperfluorooctane sulfonamidoethanol; may also be referred to as N1-1E1t2F,2O,S3E,3,A4l,c4o,h5o,l5,o6r,F6,M7-.374.28,28.,(8-1h-eOpcttaadenceasfullufooron-aNm-i(d2e-h,Nyd-reotxhyyelt-hyl)-, Remarks: Material is an off-white, waxy solid of uncharacterized purity.

PHOTODEGRADATION (SOIL) AR12-032 TEST SUBSTANCE Identity: N-ethylperfiuorooctane sulfonamidoethanol; may also be referred to as N1.-1E,t2,F2O,S3,E3,A4l,c4o,h5o,l5,o6r,6F,M7-.37,482,28.,8-(h1e-pOtcatdaecnaefsiuulofroon-aNm-i(d2-eh,ydNr-oextyheytlh-yl)-, CAS # 1691-99-2) Remarks: Material is an off-white, waxy solid of uncharacterized purity.

Copies to: E. 1. du Font de Nemo'rs and Company Haskell Laboratory for Toxicology and Industrial Medicine HASKELL LABORATORY REPORT NO. 58-78 MR KO Haskell -So. 11,890 Sample Ready for Testing 12/2/77 Other Codes Material Fextlle Fibe Seaford, Del 96-HOUR LC502 TO nLUEGITLL SUKFISK Procedure; The test material, in original form, was introduced into all-glass exposure vessels and di supply aCer~6o~yield the desired'concentrations in a'7.5 S. final volume.

AR226-3111 TRADE SECRET Study Title H-23746 and H-23747: Skin Irritation Test in Rabbits Laboratory Project ID: DuPont-1977 AUTHOR: Carol Finlay, B.A.

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BIOSEARCH, INC. p.o.box 8598 philesdelphipae.nnsylvania19)01 t e Ie p k o n e 2 1 5 848-4499 Submitted to: Material: Sample Received: Date of Report: Test: Object of Test: Method of Test: 3M Company 3M Center St.

ACUTE TOXICITY TO FISH (MUMMICHOG) TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may alsobe referredto as PFOS, FC-95, oras a component ofFC-780B. (1Octanesulfonicacid)(CAS # 2795-39-3).

07JL3 ACUTE TOXICITY TO AQUATIC INVERTEBRATES (GRASS SHRIMP) 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).

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AR226-2752 Copies to: E.