Haskell Laboratory for Toxicology and Industrial Medicine AR226-3373 October 30,1998 To: From: AG Haskell Laboratory Haskell Laboratory CARCINOGENIC AND DEVELOPMENTAL TOXICITY HAZARD DETERMINATIONS AMMONIUM PERFLUOROOCTANOATE (Octanoic Acid, Pentadecafluoro-, Ammonium Salt) CAS REGISTRY NO. 3825-26-1 Ammonium perfluorooctanoate (C-8) has been reviewed according to DuPont Corporate Standard S18T (Hazard Determination Process) for assessment and control of carcinogenic and developmental toxicity hazards.

AR226-012] FE-RY TOXICITY TO AQUATIC PLANTS (E.G., ALGAE) TEST SUBSTANCE -- Identity: Perfluorooctanesulfonate; may also be referred to as PFOS or FC-95 or aspartof the mixed product FM-3820 (see Remarks). (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 test sample is FM-3820, a mixture of the test substance in diethylene glycol butyl ether and water (approximately 24-28% test substance in diethylene glycol butyl ether and water).

AR 826. 06T4 TOXICITY TO AQUATIC PLANTS TEST SUBSTANCE Identity: A mixture containing perfiuorooctanesulfonate, which may also be OrecftearnreesdutlofoansicPFacOiSd,) (FCCA-S95#o2r7a95s-a39c-o3)m.ponent of FC-201AF. (1- Remarks: _ The 3M production lot number was not noted.

AR226-2033 WASHINGTON WORKS " INDUSTRIAL HYGIENE REPORT FROM l-Jan-1995 TO l8-Dec-1997 AREA: E-LUOROCaRBOMS - COPOLYMERS IB.Dec-1997 Page 1 CHEMICAL SAMPLB LOCATION *;CONTROL -8/FC-143 610| DATS; 9-JuX-J DURATION; 390 SAMPLE TYPE; P [BEAD SWECO NOTEBOOK: SCREEMER OPERAT TCP02,P293 EMPLOYEE ftOOOOO C^dhw COKCi 0.02 MPB PERCENTAGE s 4 % PERS CODEs 18PJ ^f^^'h ^V^^ ^.

AR226-2071 25850B Processed!!

AR226-2996 .

H-24678: Subchronic Toxicity 90-Day Oral Gavage Study in Rats AR226-3243 DuPont-6554 TRADE SECRET Study Title H-24678: Subchronic Toxicity 90-Day Oral Gavage Study in Rats Volume 1 of 4 Laboratory Project ID: DuPont-6554 TEST GUIDELINES: U.S.

Corperati HealthPhysics Corporate OccupationalMedicine Corporate Product Responsibility Corporate Toxicology 3M Medical Department 3M Center,220-2E-02 PO Box 33220 St.Paul,MN 55133-3220 651733 1110 An EpidemiologicAnalysisoftheInpatientand OutpatientClaims Event and EpisodeExperienceof3M Decatur Employees,1993-1998 The purposeofthisresearcphrotocolisto examinetheCorporateHealthStrategies Ingenix(CHS) inpatienatnd outpatientclaimsdatabasesfrom January1,1993 through December 31, 1998 ofDecaturchemicaland filmplantemployees.Claims dataarenot availablferom CHS priorto 1993.

MICROBICS MICROTOX@ TEST SUBSTANCE TOXICITY TEST Identity:A mixturecontainingperfluorooctanesulfonatmea;y also be referredto as PFOS, FC-95, or as a component of FC-206CF or FC-206CF-X. (1-Octanesulfoniacid)(CAS # 2795-39-3).

BIODEGRADATION (BOD/COD) TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonawthei,ch may alsobe referredtoas PFOS, FC-95, or as a component of FC-787 or FC787X. (1-Octanesulfoniaccid)(CAS # 2795-39-3).

AR 226 - 0297 BIODEGRADATION (MANOMETRIC RESPIROMETRY -- AEROBIC) TEST SUBSTANCE Identity: A mixture containing perfluorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-3041. (1Octanesulfonic acid) (CAS # 2795-39-3).

foHseon vefntne,13.305137i07.m75a45Bld,Madcon, I 608.241.4471 608.241.7227 Fax Sponsor: 3M St.

AR 86 _ 0824 ACTIVATED SLUDGE RESPIRATION INHIBITION TEST TEST SUBSTANCE Identity: A mixture containing referred to as PFOS, perfiuorooctanesuifonate; may also be FC-95, or as a component of FC-206CF or FC-206CF-X. (1-Octanesulfonic acid) (CAS # 2795-39-3).

BACK TO MAIN STABILITY IN THE ATMOSPHERE (PHOTOLYSIS) TEST SUBSTANCE Identity: Perfluorooctanesulfonyl fluoride.

AR226-2035 ^ "Roge J.