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Toxicological Summary PFOS Dietary Acute Northern Bobwhite Study Test Substance: Perfluorooctanesulfonate (PFOS) Structure: 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 test substance is a white powder (3M lot #217).

RESEARCH Precise Research.

Final Report on A Pharmacokinetic Study of Potassium Perfluorooctanoate in the Cynomolgus Monkey T " ~ 7^ r ^ - l To: 3M Corporation P.O.

UDR-TR-03-00044 Final Report - LaboratoryScale Thermal Degradation of Perfluoro-Octanyl Sulfonate and Related Substances June 2003 Final Report Laboratory-Scale Thermal Degradation of Perfluoro-Octanyl Sulfonate and Related Precursors This report covers the efforts performed by the University of Dayton Research Institute (UDRI), Environmental Science and Engineering Group, Dayton, OH 45469OX32, during the period from March 2001 to December 2002.

NOTICE: The information provided to the agency contains information that 3M voluntarily has submitted as part of our continuing discussions with the EPA regarding fluorochemistry.

ADDITIONAL COMMENTS OF 3M COMPANY TO THE EPA SCIENCE ADVISORY BOARD PFOA REVIEW PANEL APRIL 18, 2005 CONTACT: JOHN L.

A R W -o H IJ ACUTE TOXICITY TO FISH TEST SUBSTANCE Identity: [2-(N-Ethylperfluorooctanesulfonamido) ethyl acrylate; may also be referred to as B1228, D-1, EtFOSEA, or FX-13. (2-Propenoic acid, 2[ethyl[heptadecafluorooctyl)sulfonyl]amino]ethyl ester, CAS # 423-82- 5) Remarks: Material is an amber solid.

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,T estR esu)ts \ AR226-2120 flle:///C|/WLNDOWSn iMVim>8 5F IZ-I l - / y mru iz.-1 3 -iy.n m i Test Results Sam ple Date Range Concentration Range Action Level Industrial Hygiene 12/11/79 100% 12/13/79 Sample Dt Sample # Duration Type Employee Name Pers B T O : 08 TEFLON@ LOC: 706 FINE POW DER D RYER #3 12/13/79 48579 S Chemical Cone Unit Percent c ' 8 <0.0001 PPM 0.0% BTO: LOC: 08 TEFLON 707 FINE POW DER D RYER #2 12/11/79 60139 S C-8 0.0038 PPM 0.0% ) 1of 2 8/9/2001 3:50 PM EID139475 ,,T estR esults 4 V ** I * Thursday.

AR226-2241 /f* Debbie J Mulrooney 01/07/2002 01:14 PM To: Robert F Pinchot/DEV/AE/DuPont@DuPont cc: Subject: Modeling Results Rob, Here are the contour plots and maxim um concentrations from the straight dispersion runs (no deposition or depletion) for both 2 000 actual and permitted emissions.

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