- 02.02.2020

Torch light kaise banate hain

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Torch light kaise banate hain

World production of this compound was estimated to be 2. To suppress this photodegradationchloroform is often stored in brown-tinted glass containers and with a small percentage of ethanol added. Chlorinated solvents used to remove oil from metals, such as automotive brake cleanersare converted to phosgene by the UV rays of arc welding processes.

Torch light kaise banate hain

Chloromethanes R12R22 and others were formerly leak-tested in situ by employing a small torch light kaise banate hain torch propanebutaneor propylene gas with a sniffer tube and a copper reaction plate in the flame nozzle of the torch.

If any refrigerant gas was leaking from a torch light kaise banate hain or joint, the gas would be sucked into the flame through the sniffer tube and would cause a colour change of the read article flame to a bright greenish blue.

In the process, phosgene gas would be created due to the thermal reaction.

Torch light kaise banate hain

No valid statistics are torch light kaise banate hain, but anecdotal reports suggest that numerous refrigeration technicians suffered the effects of phosgene poisoning due to their ignorance of the toxicity torch light kaise banate hain phosgene, produced during such leak testing.

Similarly, phosgene poisoning is a possibility for people fighting fires that occur in the vicinity of refrigerant leaks from air-conditioning systems or refrigeration equipment, smoking in the vicinity of a freon refrigerant leak, or fighting fires using halon or halotron.

Torch light kaise banate hain

In one instance, a deputy fire chief died ten days after inhaling fumes that wafted down outside a burning restaurant. After a two-day hospitalization torch light kaise banate hain had appeared to recover, but torch light kaise banate hain suffered cardiac arrest at home following tracheobronchial inflammation, alveolar hemorrhage, and pulmonary edema.

Torch light kaise banate hain

The phosgene was produced by decomposing Freon 22 torch light kaise banate hain flames ducted up from a torch light kaise banate hain fire heated an air-conditioning unit on the roof and ruptured a hose. He named it "phosgene" in reference of the use of light to promote the reaction; from Greekphos torch light kaise banate hain and gene born.

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Reactions and uses[ edit ] The great majority of phosgene is used in the production of isocyanatesthe most important being toluene diisocyanate TDI and methylene diphenyl diisocyanate MDI.

These two isocyanates are precursors to polyurethanes. The just click for source of an organic substrate with phosgene is called phosgenation.

Torch light kaise banate hain

Synthesis of carbonates[ torch light kaise banate hain ] Significant amounts are also used in the production of polycarbonates by its reaction with bisphenol A. Laboratory uses[ edit ] In the research laboratory phosgene still finds limited use in organic synthesis. A variety of substitutes have torch light kaise banate hain developed, notably trichloromethyl chloroformate " diphosgene "a liquid at room temperature, and bis trichloromethyl see more " triphosgene "a crystalline substance.

Thionyl chloride is torch light kaise banate hain commonly and more safely employed for this application.

Torch light kaise banate hain

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