TREATMENT OF CHEMICAL AGENT CASUALTIES NOR NAVSURNLANT SHIPS

File: 082696_doc1_035.txt
Page: 035
Total Pages: 652
                                                           Page 1 of 4


                                         EPA CHEMICAL PROFILE

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


             CHEMICAL ID ENTITY - HYDROCYANIC ACID

             CAS Registry Number: 74-90-8

             Synonyms: Hydrogen Cyanide; Prussic Acid; Aero Liquid HCN; Cyclon; Cyclone
             B; Evercyn; Formic Anammonide; Formonitrile; Zaclondiscoids

             Chemical Formula:  HCN

             Molecular Weight: 27.03


             SECTION I-- REGULATORY INFORMATION
                  CERCLA (SARA) 1986:

}                       Toxicity Value Used for Listing Under Section 302:  LC50 Inhalation
                        (mouse) 0.357 mg/liter/S minutes (*NIOSH/RTECS 1985)

                        TPQ: 100 (pounds)

                        RQ: 10 (pounds)

                        Section 313 Listed (Yes or No): Yes


             SECTION lI-PHYSICAL/CHEMICAL CHARACTERISTICS


1                 Physical State: Gas
                  Boiling Point: 78.10F, 25.60C (*Merck 1976)

                  Specific Gravity (H2Onl): 0.699 (liquid) (*Weast,1983)

                  Vapor Pressure (mmHg): 630 (*White-Stevens 1971)

                  Melting Point 7.90F, -13.40C (*Merck 1983)

1                 Vapor Density (AIR=l): 0.901 g/1 (*Weast 1983)

                  Evaporation Rate (Butyl acetate~l): Not Found

                  Solubility in Water: Miscible with water (*Merck 1976)

                  Appearance and Odor: Colorless gas or liquid; bitter almond odor (*Merck
   j              1976; *CHRIS 1978)