TREATMENT OF CHEMICAL AGENT CASUALTIES NOR NAVSURNLANT SHIPS

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                                          EPA CHEMICAL PROFILE         October 31, 19835Q 1987


                CHEMICAL IDENTITY - SARIN

                CAS Registry Number: 107-44-8

                Synonyms: (NIOSH/RTECS 1983 Synonyms, Volume 3, p. 122) Phosphonofluoridic
                Acid, Methyl-, Isopropyl Ester; GB; IMPF; Isopropoxymethylphosphoryl Fluoride;
                Isopropyl Methanefluorophosphonate; Isopropyl Methyifluorophosphate;
                Isopropyl-Methyl-Phosphoryl Fluoride; Methylphosphonofluoridic Acid Isopropyl
                Ester; MFI; Phosphine Oxide, Fluoroisopropoxymethyl; Phosphoric Acid,
                Methyifluoro-, Isopropyl Ester; Sarin II; T-144; T-2106; TL 1618; Trilone 46

                Chemical Formula: C4H10FO2P

                Molecular Weight: 140.11


                SECTION 1-- REGULATORY INFORMATION

          )        CERCLA (SARA) 1986:

-~                        Toxicity Value Used for Listing Under Section 302: LC50 inhalation


                          (human) 0.07 mg/liter (*NIOSH/RTECS 1985)
                          TPQ: 10 (pounds)

                          RQ: 1 (pounds)
                              (statutory, for notification under SARA Section 304(a)(2))

                          Section 313 Listed (Yes or No): No


                SECTION 11--PHYSICAL/CHEMICAL CHARACTERISTICS

                   Physical State: Liquid

                   Boiling Point: 2970F, 1470C (Merck 1983, p. 1204)

                   Specific Gravity (H2O=1): 1.10 at 200C/40C (Merck 1983, p. 1204)

                   Vapor Pressure (mmHg): 2.9 at 250C (U.S. Army 1975, p. 3-4)

                   Melting Point: -710F, -570C (Merck 1983, p. 1204)

                   Vapor Density (AIR=l): 4.86 (U.S. Army 1975, p. 3-4)

                   Evaporation Rate (Butyl acetate=1): About the same as water (U.S. Army
-. --              1975, p. 3-4)