Melting point :decomposes at 240℃ [CRC10]
Density :11.000
solubility :insoluble in H2O, acid solutions; soluble in aquaregia
form :brown-black cubic crystals
color :brown-black cubic crystals, crystalline; unstable
Water Solubility :insoluble H2O, dilute single acids; soluble aqua regia, alkali cyanide solutions [MER06] [KIR78]
Crystal Structure :Cu2O type
crystal system :Cube
Space group :Pn3m
Lattice constant :

a/nm	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
0.502	0.502	0.502	90	90	90	0.1265

EPA Substance Registry System :Gold sulfide (Au2S) (1303-60-2)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:	P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.