Document gDG9jD6JyYYQ0njd77QgMzXJa

ZedQ -093RECEIVED OPPT CB1C 03SEP25 September 23, 2003 iSjL*jn / Duftmt Haskell Laboratory for Health and Environmental Sciences Elkton Road. RQ Box 50 Newark, DE 19714-0050 Via Federal Express AR226-1535 Document Processing Center (Mail Code 7407M) Room 6428 Attention: 8(e) Coordinator Office of Pollution Prevention and Toxics U.S. Environmental Protection Agency, ICC Building 1201 Constitution Ave., NW Washington, DC 20460 CBI Dear 8(e) Coordinator: This letter is in response to the Agency request for additional information concerning the above referenced test mixture. The tested mixture is the active ingredient in Zonyl FSP Fluorosurfactant. It is used to impart wetting and leveling properties in institutional, industrial and household cleaning products such as floor polish and latex paint formulations in the range of one-hundred to five-hundred parts per million. DuPont has conducted extensive studies to be able to define safe use and handling for our customers. This information as well as guidance on safe disposal procedures is contained in the material safety data sheet for this mixture that is provided to our costumers. Enclosed, please find a copy of the current material safety data sheet. A. Michael Kaplan, Ph.D. Director - Regulatory Affairs and Occupational Health i cr> --'31 :3Cc -o o rn rv> AMK:clp (302) 366-5260 89030000263 0 !) 0 El. du Rant de Nemours and Company I3