GB
CAS No. 21036, Molecular Formula C₂H₅Cl
75-00-3; CH₃CH₂Cl
molecular 64.52

colorless gas with similar ether-like odor; vapor pressure 53.32kPa/-3.9 ° C a flash point of -43 ° C / issuer Cup; melting point -140.8 ° C; the boiling point of 12.5 ° C; solubility : water-soluble, in the majority of immiscible organic solvent; density : relative density (water = 1) 0.92; the relative density (Air = 1 ) 2.20; Stability : stability hazard markers 4 (flammable liquids); the main purposes : as a catalyst for polypropylene, used as refrigerants, narcotic drugs and insecticides

2. The impact on the environment :
a health hazard

pathways : inhalation.
health hazards : a stimulating and anesthetic effects. High concentrations damage to the heart, liver and kidney. Inhalation of 2% to 4% concentration can cause movement disorders, mild pain disappeared, but its stimulating effect is minimal; High concentrations of contact caused anesthesia, there hub restrained, there will be the cycle and respiratory depression. Skin contact can be limited by the rapid cooling, resulting in frostbite.

two, toxicology information and environmental behavior

toxicity : It is a middle class drug.
acute toxicity : LC₅₀160000mg/m3, 2 hours (rat inhalation); Inhalation mg / L × 17 minutes, a weak; Inhalation 50 mg / L × 1 minute and started anesthetic effects; inhalation 90 mg / L × 7.5 ~ 8 minutes, physiological dysfunction, hair purple.
subacute and chronic toxicity : rats inhaled 5300ppm × 2 hours / day x 60 days, the lymphocyte phagocytic ability, lung damage.
Mutagenicity : microbial mutagenicity : Salmonella typhimurium 10 µ g / plate.
cancer : IARC carcinogens comments : Animal suspicious positive, has no reliable data.

hazardous characteristics : flammable, mixed with air can form explosive mixtures. Case heat and the fire is burning a risk of explosion. Contact with the oxidizer will be fierce response. Gas is heavier than air, will spread to the lower Department of considerable local and met the fire will generate a return to burning.
combustion (decomposition) products : carbon monoxide, carbon dioxide, hydrogen chloride, phosgene.

3. Emergency Monitoring Methods :
portable gas chromatography

4. Laboratory monitoring methods : gas chromatography
"urban and industrial wastewater analysis of organic compounds," such as Wang Ke translated
GC "Solid Waste Assessment Test and Analysis Handbook" China Environmental Monitoring Director station translated
chromatography / mass spectrometry method of France and American EPA524.2

5. Environmental standards :
former Soviet air workshop harmful substances maximum allowable concentration 50mg/m3

6. Emergency treatment and disposal methods :
a leakage contingency

rapid withdrawal of staff from air leakage supremacy wind and isolation and strict restrictions on access. Cut off the fire source. Recommended emergency personnel wearing respirators-positive pressure self-sufficiency, wearing fire protective clothing. As far as possible, cut off the source of leakage. Using industrial coating or adsorption / absorbent cover near the leaking sewer, and other gases to prevent access. A reasonable ventilation, accelerated proliferation. Spray - diluted solution. To build a causeway or trenching asylum produce a lot of wastewater. If possible, use immediately. Leak containers should be properly handled, repair, testing later use.
waste disposal method : incineration. Waste mixed with other fuel burning. Burning to fully prevent phosgene generation. Incinerator Exhaust of hydrogen through halogenated acid scrubber to remove.

two protective measures

respiratory protection : higher concentration in air, it is recommended to choose suction filtered gas masks (half-mask).
eye protection : Wear protective chemical safety glasses.
physical protection : antistatic wear uniforms.
hand protection : Wear gloves against chemicals.
other : no smoking scene work. Enter the missing cans, or other restrictive space of high concentration operations, someone custody.

three, and emergency measures

contact with the skin : If frostbite, medical care treatment.
Inhalation : rapidly from the scene to fresh air. To keep the airway patency. If breathing is difficult, give oxygen. If breathing stop immediately mouth. Medical treatment.

fire fighting methods : cut off of gas supply. If not immediately cut off the gas supply, it is not extinguished combustion gases. Cooling water containers, if possible to move containers from the scene empty Department. Extinguishant : mist of water, foam, dry powder, carbon dioxide.