Document wr18Gg6avyarO9ggvBEKaJex6

I 3M Corporate Toxicology and Regulatory Services 3M Center, Building 0220-02-E-02 St. Paul, MN 55144-1000 651 733 1773 Fax I iLf. Certified Mail September 16, 2003 Document Processing Center EPA East - Room 6418 Attn: Section 8(e) Office of Pollution Prevention and Toxics US EPA 1200 Pennsylvania Avenue NW Washington DC 2046(1-0001 RE: TSCA 8(E) SUPPLEMENTAL SUBMISSION: Docket No. 8EHQ-03-15262 1-Butanesulfon ylfluoride, 1,1,2,2,3,3,4,4-octafluoro-4-[(trifluoroethenyl)oxy] (CAS: 88190-25-7) Dear Docket Coordinators: On January 10, 2003, 3 VI provided EPA with preliminary results from a 28-day oral toxicity study in rats conducted with 1-Butanesulfonylfluoride, 1,1,2,2,3,3,4,4octafluoro-4-[(trifluoroethenyl)oxy] (CAS: 88190-28-7). The final report for this study contains results tl at are consistent with the previously reported information. Enclosed please find the following final report on CD-Rom: Rat Repeat Dose 28-Day Oral Toxicity + 14-Days Recovery Please contact Andrew Seacat (651-575-3161) if you have any questions or if we can provide additional information. Sincerely, o 03 cr-/no> rroo C D JO "C i rn -73 0 Larry R. Johnson Director, Corporate Toxicology and Regulatory Services * * to m 30 * O3 03 Enclosure 89030000261 0 30 0 OO E r~CnoO CO o -- 0 m 33 3C O 00 no rx>