Nomenclature
CAS number: 506-65-0
Aurous cyanide; gold cyanide.
CAuN; mol wt 222.98.
C 5.39%, Au 88.33%, N 6.28%.
AuCN.
Description and 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.Caution
May liberate HCN.