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Atomistry » Chromium » Compounds » Chromium Sesqui-arsenide | ||
Atomistry » Chromium » Compounds » Chromium Sesqui-arsenide » |
Chromium Sesqui-arsenide, Cr2As3
Chromium Sesqui-arsenide, Cr2As3, is prepared by heating finely divided chromium with excess of arsenic at 700° C. in a sealed exhausted tube, the product being powdered and again heated. The resulting compound is not changed in composition by prolonged heating in hydrogen at 400° C., but above that temperature it loses arsenic and passes to the monoarsenide. Chromium sesqui-arsenide is a grey powder, of density 6.2 at 22° C.; it is insoluble in acids.
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