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Antimony Salt Compounds

Antimony Trisulfide (Sb2S3) Powder 1345-04-6

Antimony Trisulfide (Sb2S3) Powder 1345-04-6

Antimony Trisulfide is a black powder, which is a fuel used in various white star compositions of the potassium perchlorate-base. It is sometimes used in glitter compositions, fountain compositions and flash powder.

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Product Details

Antimony Trisulfide

Molecular formula:	Sb₂S₃
CAS No.	1345-04-6
H .S code:	2830.9020
Molecular Weight:	339.68
Melting Point:	550 Centigrade
Boiling Point:	1080-1090Centigrade.
Density:	4.64g/cm³.
Vapor pressure:	156Pa（500℃）
Volatility:	None
Relative weight:	4.6（13℃）
Solubility (water):	1.75mg/L(18℃)
Others:	soluble in acid hydrochloride
Appearance:	black powder or silver black little blocks.

About Antimony Trisulfide

Tint: According to its different particle sizes, manufacturing methods and production conditions, the formless antimony trisulfide is provided with different colors, such as gray, black, red, yellow, brown and purple, etc..

Fire Point: Antimony trisulfide is easy to be oxidized. Its fire point - the temperature when it begins self-heat and oxidation in the air depends on its particle size. When the particle size is 0.1mm, the fire point is 290 Centigrade; when the particle size is 0.2mm, the fire point is 340 Centigrade.

Solubility: Insoluble in water but soluble in hydrochloric acid. In addition, it can also dissolve in the hot concentrated sulfuric acid.

Appearance: There should not be any impurity that can be differentiated by eyes.

Enterprise Standard of Antimony Trisulfide Specification

Symbol	Application	Content Min.	Element Controlled (%)					Moisture	Free Sulphur	Fineness (mesh)
Symbol	Application	(%)	Sb>	S>	As<	Pb<	Se<	Max.	Max.	>98%
UMATF95	Friction Materials	95	69	26	0.2	0.2	0.04	1%	0.07%	180(80µm)
UMATF90	Friction Materials	90	64	25	0.3	0.2	0.04	1%	0.07%	180(80µm)
UMATGR85	Glass&Rubber	85	61	23	0.3	0.4	0.04	1%	0.08%	180(80µm)
UMATM70	Matches	70	50	20	0.3	0.4	0.04	1%	0.10%	180(80µm)

Packaging status: petroleum barrel (25kg), paper box (20、25kg),or as customer’s requirement.

What is Antimony Trisulfide used for?

Antimony Trisulfide(Sulfide) is widely used in the war industry including gunpowder, glass and rubber, match phosphorus, fireworks, toy dynamite, simulated cannonball and friction materials and so on as the additive or catalyst, anti-blushing agent and heat-stabilizer and also as the flame-retardant synergist replacing antimony oxide.