Gold Monocyanide
Title: Gold Monocyanide
CAS Registry Number: 506-65-0
Additional Names: Aurous cyanide; gold cyanide
Molecular Formula: CAuN
Molecular Weight: 222.98
Percent Composition: C 5.39%, Au 88.33%, N 6.28%
Line Formula: AuCN
Literature References: May be prepd by decompn of Na[Au(CN)2] with HCl: Wogrinz, Metalloberflaeche 8, B162 (1954).
Properties: Yellow, odorless powder; iridescent in sunlight; slowly dec in presence of moisture. When warmed with HCl, HCN is evolved. When ignited, dec into metal Au and CN. d420 7.14. Hexagonal when cryst. Practically insol in water, alcohol, ether, dil acids; sol in ammonia, soln of NaCN; dissolved by aqua regia. On warming with concd H2SO4 half of the gold separates as metal.
Density: d420 7.14
CAUTION: May liberate HCN.

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