TREATMENT OF CHEMICAL AGENT CASUALTIES NOR NAVSURNLANT SHIPS

File: 082696_doc1_651.txt
Page: 651
Total Pages: 652
 -                     Toxicity Data for Hydrogen Sulfide

        1. The harmful effects of hydrogen sulfide as a function of its
        concentration in air are listed below. This information was
        obtained from th~ Defense Intelligence Agency, Washigton, D. C.
        (Response to Tasker Number 1990, DTG: 020515Z Nov 90).

             Concentration of H2S                    Effects

             Percent        PPM

             0.001          10                       Obvious and
                                                     unpleasant odor

             0.002          20                       Safe for 8 hr
                                                     exposure

             0.01           100                      Kills smell sense
                                                     in 3 to 15 min;
                                                     may sting eyes and
                                                     throat

             0.02           200                      Kills smell shortly;
(                                                    stings eyes and
                                                     throat

             0.05           500                      Dizziness; breathing
                                                     ceases in a few min;
                                                     needs prompt
                                                     artificial
                                                     respiration

             0.07           700                      Unconscious quickly;
                                                     death will result if
                                                     not recued promptly

             0.1            1000                     Unconscious at once;
                                                     followed by death
                                                     within minutes


        2. A number of relevant properties of hydrogen sulfide are
        indicted below.

             a. Boiling point: -62 degrees F

             b. Automatic Ignition:  500 degrees F

             C. Heavier than air