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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 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 ...
Phosgene: 8.1 mg/m 3: 2 ppm: 75445: 7803-51-2: 0694: Phosphine: 69.5 mg/m 3: 50 ppm: 7803512: 7664-38-2: 1008: Phosphoric acid: 1000 mg/m 3-7664382: 7723-14-0: 0628: Phosphorus (yellow) 5 mg/m 3-7723140.html 7723140: 10026-13-8: 0544: Phosphorus pentachloride: 70 mg/m 3-10026138: 1314-80-3: 1407: Phosphorus pentasulfide: 250 mg/m 3-1314803: ...
LiiP(C 6 H 5) 2 + CH 3 I → CH 3 P(C 6 H 5) 2 + LiI. Phosphine is a precursor to some tertiary phosphines by hydrophosphination of alkenes. For example, in the presence of basic catalysts PH 3 adds of Michael acceptors such as acrylonitrile: [8] PH 3 + 3 CH 2 =CHZ → P(CH 2 CH 2 Z) 3 (Z = NO 2, CN, C(O)NH 2)
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 .
Organophosphorus(0) species are debatably illustrated by the carbene adducts, [P(NHC)] 2, where NHC is an N-heterocyclic carbene. [12] With the formulae (RP) n and (R 2 P) 2, respectively, compounds of phosphorus(I) and (II) are generated by reduction of the related organophosphorus(III) chlorides: 5 PhPCl 2 + 5 Mg → (PhP) 5 + 5 MgCl 2
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.
One class of phosphazenes have the formula R−N=P(−NR 2) 3. These phosphazenes are also known as iminophosphoranes and phosphine imides. They are superbases. [1] Another class of compounds called phosphazenes are represented with the formula (−N=P(−X) 2 −) n, where X = halogen, alkoxy group, amide and other organyl groups.