GB
CAS No. 21030, Molecular Formula C₂H₃F
75-02-5; CH<sub>2< / SUB>CHF
molecular 46.0

colorless, odorless gas; boiling point -72.2 ° C; melting point -160.5 ° C; solubility : not soluble in water, soluble in alcohol, ether, etc. ; density : relative density (water = 1) 0.78 (30 ° C); the relative density (Air = 1) 1.6; Stability : stability; risk Marker 4 (flammable gases) main purposes : the main system for the polymerization of ethylene < fluoride / P></sub>

2. The impact on the environment :
a health hazard

pathways : inhalation.
health hazards : no poisoning reported. In rats inhaled concentration of 80% of the quality of four hours, and no deaths. Case of thermal decomposition of the release of highly toxic hydrogen fluoride gas.

two, toxicology information and environmental behavior

toxicity : is low toxicity category.
Mutagenicity : tumor transforming : rats inhaled 2000ppm (14 weeks), intermittent. The micronucleus test : 19100ppm inhalation in mice (6 hours), consecutive.
cancer : IARC carcinogens comments : Animals, humans without reliable data.

hazardous characteristics : air mixture can form explosive mixtures. Case heat and the fire is burning a risk of explosion. Contact with the oxidizer will be fierce response. Burning or without inhibitors may dramatic polymerization. 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 fluoride.

3. Emergency Monitoring Methods :

4. Laboratory monitoring methods : gas chromatography
reference to the "Handbook of Analytical Chemistry" (fourth volumes, chromatography analysis), the chemical industrial Press

5. Environmental standards :

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. Using industrial coating or adsorption / absorbent cover near the leaking sewer, and other gases to prevent access. A reasonable ventilation, accelerated proliferation. Or pipeline leading to the furnace, Au to burn it. Leak containers should be properly handled, repair, testing later use.

two protective measures

respiratory protection : Most do not need special protection, but suggested that under special circumstances, since wearing gas masks suction filtered (half-mask).
eye protection : when necessary, wearing chemical protective safety glasses.
physical protection : antistatic wear uniforms.
hand protection : Wear protective gloves general operations.
other : no smoking scene work. To avoid high concentrations of respirable.

three, and emergency measures

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, ordinary foam, dry powder.