Arsenious hydride

Decomposed into its elements, like arsenious hydride, when passed through a red.hot tube. 

When transmitted through a solution of argentic nitrate, it produces a precipitate of antimonious argentide thus dif-fering from arsenious hydride (see p. 121 -—... 

Gosselin, B., Mathieu, D., Despreznolf, M., Cosson, A., Goude-mand, J., Haguenoer, J.M., Wattel, F. (1982). Acute arsenious hydride intoxication - 4 cases. Nouv. Presse Med. 11 439 2. 

Synonyms Arsenic hydride, arsenic trihydride, arseniuretted hydrogen, arsenious hydride, hydrogen arsenide CAS Registry Number 7784-42-1 DOT Proper Shipping Name Arsine... 

Synonyms arsenic trihydride hydrogen arsenide arsenious trihydride arsenic hydride arsenic hydrid arsineuretted hydrogen Budavari et al. 1989 ... 

This reaction does not proceed in carbon tetrachloride solution.10 Retgers 11 stated that the solid hydride resulted when arsine was heated or when the flame of arsine impinged on a cold plate but other observers 12 maintain that arsenic alone is produced. A solid hydrogen-containing product has also been obtained by the action of zinc, in the presence of sulphuric and nitric acids, on arsenious oxide,13 and by the action of arsine on solid potassium hydroxide,14 followed by the addition of water. A good yield (up to 98 per cent.) of the hydride in a comparatively pure state may be obtained by mixing an ether solution of stannous chloride with a solution of arsenic trichloride in dilute hydrochloric acid.15 The reaction is ... 

The combination of arsenic with dry nascent hydrogen was observed by Vournazos,14 who obtained a mixture of hydrogen and arsine by heating rapidly to 400° C. in a round-bottomed flask a mixture of three parts of powdered arsenic with eight parts of dry sodium formate. The addition of sodium hydroxide or lime to the mixture prevents the formation of sodium oxalate and hence of carbon monoxide. Arsenious oxide, sodium arsenite or arsenic acid may be used in place of arsenic, but the yields are small. The gas is also formed if arsenic vapour is passed over heated sodium formate. Also, if the sulphide or phosphide of arsenic is heated with the formate, hydrides of both components of the arsenic compound are formed but with metallic arsenides the hydride of the non-volatile component is not formed. 

This quantitative relationship was observed by Dumas 7 and Soubeiran.8 With excess of oxygen the hydride explodes violently, but if the supply of oxygen is insufficient the hydrogen is first oxidised and the arsenic liberated, and this takes place also in the spontaneous oxidation of arsine by oxygen at ordinary temperatures. Exposure of the mixed gases to j3- or y-rays results in the formation of arsenious acid 9... 

The aqueous solution in contact with air gradually deposits the solid hydride (see p. 80), but if the water is free from dissolved oxygen the solution appears to be stable.10 Arsine may be completely oxidised by prolonged shaking with hydrogen peroxide solution 11 arsenic is first deposited and is then gradually oxidised to arsenious or arsenic acid. 

Arnauld Paul Edmond Thenard (Paris, 6 October 1819-Talmay, Cote d Or, 8 August 1884), son of the famous L. J. Thenard, baron, wealthy landowner in the Cote d Or and Saone et Loire, and interested mainly in agricultural chemistry, worked (partly with A. Thenard) on phosphorus hydrides, on ozone, the action of a silent electric discharge on gases, and a black allotropic form of phosphorus. In the determination of ozone he used the oxidation of a solution of arsenious oxide in hydrochloric acid. 

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