Phosgene

CAS RN: 75-44-5

Reactivities / Incompatibilities

Violent reaction with strong oxidizers, amines, aluminum. Attacks metals in the presence of water. Attacks plastic, rubber, and coatings.
Powdered aluminum burns in the vapor of phosphorus trichloride, antimony trichloride, arsenic trichloride, & phosgene.
Reaction of phosgene with azide causes formation of explosive carbazide. To prevent the reaction complete removal of excess phosgene is advocated by passing nitrogen into soln prior to addn of azide.
The reaction between isopropyl alcohol & phosgene forms isopropyl chloroformate & hydrogen chloride. In the presence of iron salts thermal decomp can occur, which in some cases can become explosive.
Phosgene & 2,4-hexadiyn-1,6-diol react to form 2,4-hexadiyn-1,6-bischloroformate, which is a shock-sensitive cmpd.
Mixt of potassium & phosgene explodes when subjected to shock.
Vapors of sodium & phosgene react with luminescence @ about 260 deg C.
Moisture, alkalis, ammonia, alcohols, copper [Note: Reacts slowly in water to form hydrochloric acid & carbon dioxide].
Mixtures of potassium with sulfur dichloride or sulfur dibromide, phosphorus tribromide or phosphorus trichloride, and with phosgene are shock-sensitive, usually exploding violently on impact.
Under the appropriate conditions it undergoes hazardois rezctions with /aluminum/; tert-butyl azido formate; 2,4-hexadiyn 1,6-diol; isopropyl alcohol; /potassium/; /sodium/; sodium azide; hexafluoroisopropylideneamino lithium; lithium. ... When heated to decomposition or on contact with water or steam it will react to produce toxic and corrosive fumes of /carbon monoxide/ CO and /chlorides/ Cl-.
The decomposition of chlorinated hydrocarbons in closed rooms can result in the accumulation of harmful concn of phosgene, as for example from the use of carbon tetrachloride as a fire extinguishing material, or tetrachloroethylene as a lubricant in the machining of high-grade steel.
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