Melting point	550 °C(lit.)
Boiling point	1150 °C
density	4.64 g/mL at 25 °C(lit.)
refractive index	4.303
form	powder
color	Dark gray to black
Specific Gravity	4.64
Water Solubility	Soluble in concentrated acids. Insoluble in water.
Merck	14,713

Mainly used in the production of safety matches, firecrackers, ammunition and in the rubber industry as a hardener or pigment.
Mainly used in the manufacture of matches and fireworks, all kinds of antimony salts and colored glass. Rubber industry as a vulcanizing agent and military use.