What is phosgene used for?

What is phosgene used for?

Phosgene is a major industrial chemical used to make plastics and pesticides. At room temperature (70°F), phosgene is a poisonous gas. With cooling and pressure, phosgene gas can be converted into a liquid so that it can be shipped and stored.

What is phosgene process?

Industrially, phosgene is produced by passing purified carbon monoxide and chlorine gas through a bed of porous activated carbon, which serves as a catalyst: CO + Cl2 → COCl2 (ΔHrxn = −107.6 kJ/mol) This reaction is exothermic and is typically performed between 50 and 150 °C.

What is the common name of phosgene?

carbonyl chloride
– Phosgene is also called carbonyl chloride.

Why is phosgene toxic?

Phosgene inhalation may cause initially symptoms of respiratory tract irritation, patients feel fine thereafter, and then die of choking a day later because of build up of fluid in the lungs (delayed onset non-cardiogenic pulmonary edema). Phosgene exposure is associated with significant morbidity and mortality.

How is phosgene created?

First prepared in 1811, phosgene is manufactured by the reaction of carbon monoxide and chlorine in the presence of a catalyst. It can be formed by the thermal decomposition of chlorinated hydrocarbons; e.g., when carbon tetrachloride (q.v.) is used as a fire extinguisher.

What is the chemical formula for phosgene?

COCl2
Phosgene/Formula

What is the chemical name of phosgene?

Carbonyl dichloride
Phosgene/IUPAC ID
phosgene, also called carbonyl chloride, a colourless, chemically reactive, highly toxic gas having an odour like that of musty hay, used in making organic chemicals, dyestuffs, polycarbonate resins, and isocyanates for making polyurethane resins.

How bad is phosgene?

Phosgene is extremely toxic by acute (short-term) inhalation exposure. Severe respiratory effects, including pulmonary edema, pulmonary emphysema, and death have been reported in humans. Severe ocular irritation and dermal burns may result following eye or skin exposure.

What is called phosgene?

phosgene, also called carbonyl chloride, a colourless, chemically reactive, highly toxic gas having an odour like that of musty hay, used in making organic chemicals, dyestuffs, polycarbonate resins, and isocyanates for making polyurethane resins.

How is phosgene prepared?

What causes phosgene gas in a welding torch?

According to the available information, phosgene is produced as a component of welding fumes when metal that’s been cleaned with a solvent or degreaser (brake cleaner is the usual culprit). In one example, a man using repairing a refrigerator was exposed to phosgene as a result of heating the coolant with a welding torch.

How is phosgene used in the chemical industry?

Phosgene is used in industry to produce many other chemicals such as pesticides. Phosgene can be formed when chlorinated hydrocarbon compounds are exposed to high temperatures. Chlorinated hydrocarbon compounds are substances sometimes used or created in industry that contain the elements chlorine, hydrogen, and carbon.

What makes phosgene in a brake cleaner?

After reading about Hydrogen Chloride and then started researching phosgene. The chemical in the brake cleaner is Tetrachloroethylene. When this chemical is exposed with excessive heat and argon (used in MIG and TIG welding) it also produces phosgene.

What kind of gas is phosgene at room temperature?

What phosgene is Phosgene is a major industrial chemical used to make plastics and pesticides. At room temperature (70°F), phosgene is a poisonous gas. With cooling and pressure, phosgene gas can be converted into a liquid so that it can be shipped and stored. Phosgene gas may appear colorless or as a white to pale yellow cloud.