TREATMENT OF CHEMICAL AGENT CASUALTIES NOR NAVSURNLANT SHIPS

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                                       EPA CHEMICAL PROFILE

                                                              Date: October 31, 1985
                                                              Revision: November 30, 1987


           CHEMICAL IDENTITY-- MUSTARD GAS

           CAS Registry Number:  505-60-2

           Synonyms: Sulfide, bis(2-Chloroethyl); l,1'-Thiobis(2-Chloroethane);
           1 -Chloro-2-(beta-Chloroethylthio)Ethane; 2,2'-Dichlorodiethyl Sulfide;
           2,2'-Dichlorodiethyl Suiphide; 2,2'-Dichloroethyl Sulfide; 2,2'-Dichloroethyl
           Suiphide; beta, beta'-Dichloroethyl Sulfide; beta, beta'-Dichloroethyl
           Suiphide; beta,beta-Dichlor-Ethyl-Sulphide; Bis(2-Chloroethyl) Sulfide;
           Bis(2-Chloroethyl) Sulphide; Bis(beta-Chloroethyl) Sulfide;
           Bis(beta-Chloroethyl) Sulphide; Di-2-Chloroethyl Sulfide; Di-2-Chloroethyl
           Suiphide; Distilled Mustard; Ethane, l,l'-Thiobis(2-Chloro-; H; HD; Kampfstoff
           "Lost"; Mustard HD~ Mustard Vapor; Mustard, Sulfur; S Mustard; S-Lost;
           S-Yperite; Schwefel-Lost; Sulfur Mustard; Sulfur Mustard Gas; Sulphur Mustard;
           Sulphur Mustard Gas; Yellow Cross Liquid; Yperite


           Chemical Formula:  C4H8Cl2S
           Molecular Weight:  159.08


           SECTION 1-- REGULATORY INFORMATION

               CERCLA (SARA) 1986:

                     Toxicity Value Used for Listing Under Section 302: LC50 inhalation
`1                   (rat) 0.42 mg/liter/2 minutes (*NIOSH/RTECS 1985)

                     TPQ: 500 (pounds)

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

                     Section 313 Listed (Yes or No): Yes


           SECTION 11--PHYSICAL/CHEMICAL CHARACTERISTICS

               Physical State: Liquid

               Boiling Point: 419-4230F, 215-2170C (*Merck 1976)


               Specific Gravity (H2O=l): 1.274 at 200C/40C (liquid) (*Merck 1976)
               Vapor Pressure (mmHg):  0.090 at 300C (*Merck 1976)

               Melting Point: 55-570F, l3-140C (*Merck 1976)

               Vapor Density (AIR=l):  5.4 (*Sax 1975)