InternCaolrrespondence dc: V.

Pathology and Toxicology Riker Laboratories,Inc.

BIODEGRADATION (BOD/COD) TEST SUBSTANCE Identity:A mixturecontainingperfluorooctanesulfonatweh,ich may alsobe referredtoas PFOS, FC-95, oras a component of FX-3104. (1Octanesulfonicacid)(CAS # 2795-39-3).

[ c ARA26G-0316TM =~ IN VITRO a, MICROBIOLOGICAL MUTAGENICITY ASSAYS : a September 1984 : sw _ Dela Lone. ite) G LL 2 E-- C-- 3M Company em Saal attentions 3031 tomate Yea. ti...

FOR OU PONT USE ONLY Study Title AR226-2936 Du Pont HLR 805-88 Author John W.

HAZLOTON LABORATORIES AN4ERICA.

Experiment No: Conducted At: Dates Conducted: Conducted By: Reviewed By: Primary Skin Irritation Test with T-3874 in Albino Rabbits 7 !

AR 826 _ 084] BIODEGRADATION (BOD/COD) TEST SUBSTANCE Identity: A mixture containing perfiuorooctanesulfonate, which may also be referred to as PFOS, FC-95, or as a component of FC-602. (1Octanesulfonic acid) (CAS# 2795-39-3).

BACK TO MAIN ACUTE TOXICITY TO AQUATIC INVERTEBRATES (DAPHNIA MAGNA) TEST SUBSTANCE Identity: Decafluoro(pentafluoroethyl)cyclohexanesulfonate, DEA salt; may be referred to as CS-2070.

CorporatOeccupationMaeldicine 3M CenterB,uildin2g20-3W-05 St.PaulM,N 55144-1000 65''Lt34,230Telephone 6517339066Fax 1.HealthStatusofPlantWorkers ExposedtoFluorochemical-sa Preliminary Report Thispublishepdaperby Ube]etal(Am IndHyg AssocJ 1980;41:384-38p9r)ovideasn overview of fluorochemicalindustriahlygiene,medicalsurveillancaend epidemiology researchdata collectedinthe late1970'satthe Chemolite (CottageGrove, Nlinnesota) facilityT.he authorsconcludedthattotalorganicfluorinewas found intheblood of workers exposed to industriaflluorochemicals.Medical examinationof exposed workers and a briefsummary ofthe initiarletrospectiveepidemiologicmortalitystudy(seestudy # 2) ofthe plantemployees indicatedthattherewere no illhealtheffectsattributablteo fluorochemicalexposure.

ACUTE TOXICITY TO AQUATIC INVERTABRATES (DAPHNIA MAGNA) TEST SUBSTANCE Identity:Perfluorooctanoiaccid,ammonium salt;may also be referredto as PFOA ammonium salt,Ammonium perfluorooctanoateP,FO, FC116,FC-126,FC-169,orFC-143.

ARY26-02M0 =oir ER 7 MECHANISM OF TOXICITY OF A UNIQUE PESTICIDE * = ETHYLPERFLUOROOCTANE SULFONAMIDE (NEPFOS), NEB.

lap 7 1381 Synthesis and Characterization of N-Ethylrose-Y4c Docenbor 11, 1980 Concucted at: During: Synthesis Conducted bys CaonmdmeRrickiearlLCabhoermaitcoarlisesD,iviIsnci.on SStu.

Experinent Nou: Conducted At: bates Conducted: Conducted By: Reviewed BY: Jute ocular Irritation Test with 7-349 in Albino Rabbits o88azB001L iSseae.fertpyauLlaB,bvoarlMauitanotnrieiosenost,LaabIonrcatory January 3, 1984 to January 10, 1984 BDooWs. avAarkroer, oItns S TSotxuidcyolDoigriescttor {zaatte KTSeanftorroTnoaxriiceroyl,log5ilst J Acute Toxicology lf we ar Xm.mL..

wt a SLanadmMVyiceR.ecPZoobsDetrleoMnrD ME 5M Medical Department 8MP1l7aG5el3neNS:1N8B1u$iO5d1fi6nf8g1(020200.06:%08 661733 S152 Fax 3M June 27,200 : Sue Shallal, Ph.D.