Cuprous phosphide

Copper, Silver and Gold Phosphides.—The copper phosphides are crystalline compounds of metallic appearance and properties which are usually prepared by direct union of the elements.8 Phosphorus begins to combine with copper at about 400° C., and at 700° C. the copper was found to take up 20 per cent.,9 some of which was expelled at higher temperatures. Slightly above the melting-point of the phosphide 14 per cent, was retained, which corresponds to tri-cuprous phosphide, Cu3P.9 The velocity of the combination increases between 600° and 700° C.10 At ordinary pressures 15 per cent, of phosphorus is the limit of the amount which will remain dissolved in the fused mixture, and some of this is present as red phosphorus.11... 

Phosphine is absorbed by acid cuprous chloride giving an addition product CuC1.PH3.16 It precipitates phosphides from some metallic salts (see under Phosphides ). 

Cuprous Chloride 7784-25-0 Ammonium Alum 7803-51-2 Hydrogen Phosphide... 

There is an older, alternate naming system for the transitional metals when they ionically bond to form salt compounds. There may be chemicals encountered still using this older naming system, therefore, responders should be familiar with it. In this system, the suffixes ic and ous are used to indicate the higher and lower valence numbers (outer-shell electrons) of a transitional metal. For example, if copper I combines with chlorine, the name would be cuprous chloride. If copper I combines with oxygen, the name would be cuprous oxide. The lowest number of electrons in the outer shell of copper is one. When the metal with the lowest number of electrons is used, the suffix in the alternate naming system is ous. When the metal with the highest number of electrons is used, the suffix is ic. If copper n conbined with phosphorus, it would create cupric phosphide. For example, copper II combined with chlorine would create cupric chloride. 

Johann Heinrich Biltz (Berlin, 26 May 1865-Breslau, 29 October or 2 November 1943), a pupil of Victor Meyer, professor in Breslau (1911), determined the vapour densities of stannous chloride, cuprous and silver chlorides, phosphorus, sulphur, selenium, tin, arsenic, antimony and bismuth, detecting the molecule Sg. His later work was largely on organic chemistry. His brother Eugen Wilhelm Biltz (Berlin, 8 March 1877-Heidelberg, 13 November 1943) was professor in Gottingen (1900), Clausthal (1908), and Hannover. He published an immense number of papers, on colloids, the conductivities of fused salts, the compounds of ammonia with salts, compounds of beryllium and other rarer metals, sulphides, phosphides and tellurides, etc., and the molecular volumes of solid compounds. ... 

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