Melting point :550 °C(lit.)
Boiling point :1150 °C
Density :4.64 g/mL at 25 °C(lit.)
refractive index :4.303
solubility :insoluble in H2O; soluble in concentrated HCl
form :powder
color :Dark gray to black
Specific Gravity :4.64
Water Solubility :Soluble in concentrated acids. Insoluble in water.
Crystal Structure :Sb2S3 type
crystal system :Nogata
Merck :14,713
Space group :Pbnm
Lattice constant :

a/nm	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
1.13107	0.38363	1.12285	90	90	90	0.4872

Exposure limits :ACGIH: TWA 0.5 mg/m3
NIOSH: IDLH 50 mg/m3; TWA 0.5 mg/m3 Stability :Stable. Incompatible with acids (reacting to form poisonous hydrogen sulfide), moisture, water.
CAS DataBase Reference :1345-04-6(CAS DataBase Reference)
IARC :3 (Vol. 47) 1989
EPA Substance Registry System :Antimony trisulfide (1345-04-6)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H351 Suspected of causing cancer Carcinogenicity Category 2 Warning P201, P202, P281, P308+P313, P405,P501 H373 May cause damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 2 Warning P260, P314, P501 H412 Harmful to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 3 P273, P501
Precautionary statements:	P202 Do not handle until all safety precautions have been read and understood. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P308+P313 IF exposed or concerned: Get medical advice/attention. P405 Store locked up.