Arsenic halides mixed

Arsenic Phosphides.—Black or brown products of indefinite character, to which have been ascribed the formulae AsaP 4 and AsP,5 have been obtained by various methods, such as (1) by heating the elements together,6 (2) by allowing phosphorus to stand in solutions of arsenious acid,7 and (3) by the action of phosphine on arsenic halides.8 The properties of these substances resemble in general those which would be possessed by mixtures of the two elements thus, they burn in air to give the mixed oxides, decompose on heating with vaporisation of first phosphorus and then arsenic, and are oxidised by nitric acid. 

Arsenic triiodide also dissolves, the saturated solution at 15° C. having density 3-661. Other soluble halides are potassium bromide, anhydrous ferric and aluminium chlorides 6 and tetramethyl ammonium iodide but the iodides of rubidium, cadmium, manganese and cobalt, also mercuric and stannic iodides, and cobalt and stannic bromides, are insoluble or only very slightly soluble in arsenic tribromide. The liquid also dissolves phosphoryl bromide and, very slightly, ammonium thiocyanate. In the mixed solutions of halides, the components may react chemically (cf. p. 106), but such is not always the case for example, with antimony tribromide a continuous series of solid solutions is formed.7... 

Cryoscopic and ebullioscopic measurements indicate that the halides of phosphorus, arsenic, antimony, titanium and tin readily undergo reciprocal interaction with interchange of halogen atoms and that mixed halides can be formed11 (see p. 103). Melting and freezing point curves are, however, generally of the eutectic or mixed crystal types, without... 

Gallium(III) complexes, 129 amines, 129 amino acids, 141 arsenates, 135 borates, 134 borohydrides, 141 bromates, 135 carbonates, 134 caiboxylates, 135 chlorates, 135 citrates, 136 cyanides, 129 dithiocarbamates, 138 ethers, 136 fluorides, 138 germanates, 134 hydrides, 140 iodates, 135 p-ketoenolates, 134 lactates, 136 mixed halides, 139 molybdates, 135 nitrates, 135 peptides, 141 perchlorates, 135... 

Double decomposition is the usual way of forming sols of insoluble salts Silver halides easily give colloidal solutions by mixing of silver nitrate and alkali halide solu-> tions. A sol of arsenic trisulphidc is obtained by introducing hydrogen sulphide into a saturated solution of arsenic trioxidc ... 

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