noun
definition
A toxic gas, chemical formula PH3.
synonyms
definition
Any alkyl or aryl derivative of this compound, PR3 (where at least one R is not H),
definition
(dyeing) Chrysaniline, often in the form of a salt.
Examples of phosphine in a Sentence
Alkalis give hydrogen and phosphine.
Phenyl-acridine is the parent base of chrysaniline, which is the chief constituent of the dyestuff phosphine (a bye-product in the manufacture of rosaniline).
When finely divided it decomposes water giving hydrogen phosphide; it also reduces sulphurous and sulphuric' acids, and when boiled with water gives phosphine and hypophosphorous acid; when slowly oxidized under water it yields, hypophosphoric acid.
The Committee agreed the following conclusions which are applicable to phosphine and all the above mentioned metallic phosphides.
The products used now produce phosphine, which is extremely toxic to rabbits.
The chemicals present in the mattress react with the fungus and produces phosphine, arsine, and stibine.
By passing the products of the decomposition of calcium phosphide with water over granular calcium chloride, the P 2 H 4 gives a new hydride, P1.2H6 and phosphine, the former being an odourless, canary-yellow, amorphous powder.
Solid Phosphoretted Hydrogen, P 4 H 2, first obtained by Le Verrier (loc. cit.), is formed by the action of phosphorus trichloride on gaseous phosphine (Besson, Comptes rendus, 111, p. 972); by the action of water on phosphorus di-iodide and by the decomposition of calcium phosphide with hot concentrated hydrochloric acid.
When warmed with alcoholic potash it yields gaseous phosphine, hydrogen and a hypophosphite.
Water and the caustic alkalis readily decompose it with liberation of phosphine and the formation of iodides or hydriodic acid.
Just as the amines are derived from ammonia, so from phosphine are derived the primary, secondary and tertiary organic phosphines by the exchange of hydrogen for alkyl groups, and corresponding to the phosphonium salts there exists a series of organic phosphonium bases.
The reaction mixture on treatment with water yields the primary phosphine, the secondary phosphine being then liberated from its hydriodide by caustic soda.
The primary and secondary phosphines are colourless compounds, and with the exception of methyl phosphine are liquid at ordinary temperature.
Exposure to air gives phosphorous and phosphoric acids, and on heating it gives phosphine and phosphoric acid.
On heating they yield phosphine and leave a residue of pyrophosphate, or a mixture of metaand pyrophosphates, with a little phosphorus.
It decomposes on heating into phosphine and phosphoric acid.
Arsenic phosphide, AsP, results when phosphine is passed into arsenic trichloride, being precipitated as a red-brown powder.