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Phosgene is an organic chemical compound with the formula COCl 2. It is a toxic, colorless gas; in low concentrations, its musty odor resembles that of freshly cut hay or grass. [ 7 ] It can be thought of chemically as the double acyl chloride analog of carbonic acid , or structurally as formaldehyde with the hydrogen atoms replaced by chlorine ...
Phosphine is an attractive fumigant because it is lethal to insects and rodents, but degrades to phosphoric acid, which is non-toxic. As sources of phosphine, for farm use, pellets of aluminium phosphide (AlP), calcium phosphide (Ca 3 P 2), or zinc phosphide (Zn 3 P 2) are used. These phosphides release phosphine upon contact with atmospheric ...
Phosgene is the most dangerous commonly used pulmonary agent (although disulfur decafluoride and perfluoroisobutene are both even more dangerous, with respectively 4 and 10 times the lethality of phosgene, neither is widely used). It is a colorless gas under ordinary conditions.
Tributylphosphine is the organophosphorus compound with the chemical formula P(CH 2 CH 2 CH 2 CH 3) 3, often abbreviated as PBu 3. It is a tertiary phosphine. It is an oily liquid at room temperature, with a nauseating odor. It reacts slowly with atmospheric oxygen, and rapidly with other oxidizing agents, to give tributylphosphine oxide.
Phosphines or phosphanes are phosphorus compounds derived from phosphine and have the general structure R 3 P. For the nitrogen analogues, please see Category:Inorganic amines . Wikimedia Commons has media related to Phosphines .
Diphosgene is an organic chemical compound with the formula ClCO 2 CCl 3. This colorless liquid is a valuable reagent in the synthesis of organic compounds. Diphosgene is related to phosgene and has comparable toxicity, but is more conveniently handled because it is a liquid, whereas phosgene is a gas.
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Instead of HSiCl 3, other perchloropolysilanes, e.g. hexachlorodisilane (Si 2 Cl 6), can also be used. In comparison, using the reaction of the corresponding phosphine oxides with perchloropolysilanes such as Si 2 Cl 6 or Si 3 Cl 8 in benzene or chloroform, phosphines can be prepared in higher yields. R 3 PO + Si 2 Cl 6 → R 3 P + Si 2 OCl 6