GB No. 21001
CAS No. 133-74-0
Molecular Formula H₂
molecular 2.01

2. The impact on the environment :
a health hazard

pathways : inhalation.
health hazards : This is the physiology of inert gases, only at high concentrations, because of lower partial pressure of oxygen in air only caused suffocation. In the high-pressure, hydrogen may be showing anesthetic effects.

two, toxicology information and environmental behavior

hazardous characteristics : air mixture can form explosive mixtures, when heat or open flame or explosion may occur. Gas is lighter than air and indoor use and storage, up stranded gas leakage from the roof is not easy, the case of Mars will cause an explosion. Hydrogen fluoride, chlorine and bromine will halogen reacted sharply.
combustion (decomposition) product : water.

3. Emergency Monitoring Methods :
gas detector tube
gas velocity measurement tube (Beijing as insurance products, product Germany 1940s)

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

5. Environmental standards :
American plant health standards asphyxiating gas

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. A reasonable ventilation, accelerated proliferation. If possible, use exhaust gas leakage sent an open area for the installation of appropriate nozzle or burned, leakage containers should be properly handled, repair, testing later use.

two protective measures

respiratory protection : Most do not need special protection, high concentrations can wear contact air respirators.
eye protection : Most do not need special protection.
physical protection : antistatic wear uniforms.
hand protection : Wear protective gloves general operations.
other : no smoking scene work. To avoid high concentrations of respirable. Enter cans, or other restrictive space of high concentration operations, someone custody.

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 of water, foam, carbon dioxide, dry powder.