It is also prepared by passing hydrogen sulfide into a solution of antimony trichloride: The pure molten material is collected and cooled. The ore is then heated to 550-600☌ in a perforated vessel. Stibnite is separated from other ores by grinding and flotation. The pure sulphide is obtained from its ore. It is used as catalyst, additive, anti- blushing agent, heat stabilizer and used in the production of ruby-colored glass and in plastics as a flame retardant. UsesĪntimony(III) sulfide is used as a red dye in rubber vulcanization. In pyrotechnics, Bengal fires manufacture of ruby glass, matches, explosives as a pigment in paints. It is also used to make percussion caps that set off explosives. ![]() UsesĪntimony trisulfide is better known as the mineral stibniteĪnd is used as a yellow paint pigment and in the manufacture of ruby glass, fireworks, and It is used in fireworks in certain types of safety matches as a pigment in paints and in the manufacture of ruby glass. OccurrenceĪntimony trisulfide occurs in nature primarily as the mineral, stibnite, which consists of two parallel Sb4S6 chains linked together. Natural stibnite is black orthorhombic crystal or grayish-black powder the compound also exists as an amorphous substance in yellow-red modification distorted octahedral arrangement density 4.64 g/cm 3 for the natural stibnite and 4.12 g/cm 3 for the red modification melts at 550☌ vaporizes around 1150☌ insoluble in water (1.75mg/L at 18☌) and acetic acid soluble in hydrochloric acid and caustic soda solution also, soluble in alcohol, ammonium hydrosulfide and potassium sulfide.
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