Antimony Trisulfide alias Antimony sulfide (Sb2S3) is an inorganic flame retardant synergist preferably used in halogenated polymer systems such as PVC and ABS needs. Antimony sulfide (Sb2S3) strengthens the thermal stability of plastics and reduces flammability by promoting char formation and slowing combustion. Also referred to as (Antimony vermilion, Antimony trisulfide, or Diantimony trisulfide) by Antimony Trisulfide manufacturers, it is supplied in technical grade for polymer additive applications. Stibnite is a mineral with formula of Sb3+2S2-3 or Sb2S3 and being a additive or catalyst, anti-blushing agent and heat stabiliser, and also as the flame-retardant synergist replacing antimony oxide. The IMA symbol is Sbn. We are the trusted Antimony suppliers worldwide, with reliable lead times and global supply capability.
Antimony Trisulfide alias Antimony sulfide (Sb2S3) is an inorganic flame retardant synergist preferably used in halogenated polymer systems such as PVC and ABS needs. Antimony sulfide (Sb2S3) strengthens the thermal stability of plastics and reduces flammability by promoting char formation and slowing combustion. Also referred to as (Antimony vermilion, Antimony trisulfide, or Diantimony trisulfide) by Antimony Trisulfide manufacturers, it is supplied in technical grade for polymer additive applications. Stibnite is a mineral with formula of Sb3+2S2-3 or Sb2S3 and being a additive or catalyst, anti-blushing agent and heat stabiliser, and also as the flame-retardant synergist replacing antimony oxide. The IMA symbol is Sbn. We are the trusted Antimony suppliers worldwide, with reliable lead times and global supply capability.
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Industrial Chemicals
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Inorganic Chemicals
Flame Retardant
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Chemical Properties & Specifications
H302 (70.5%): Acute toxicity, oral
H332 (70.5%): Acute toxicity, inhalation
H351 (27.3%): Carcinogenicity
H373 (27.3%): Specific target organ toxicity, repeated exposure
H411 (63.8%): Hazardous to the aquatic environment, long-term hazard
Enhances fire resistance in PVC, ABS, and other halogenated plastics.
Works with halogenated FRs to improve thermal stability and reduce smoke emission.
Ideal for wire & cable insulation, molded plastics, and thermoplastics.
Preferred in matches, fireworks, percussion caps, primers Provides fuel and enhances ignition sensitivity
Used as a decolorizer and opacifier in specialty glass
Used in enamels and glazes
Component of red pigments (antimony vermilion
Used in brake linings, clutches, friction pads for stability under heat
Infrared detectors, photoconductors, and as a semiconductor material
Store in cool, dry, ventilated areas
Avoid heat, sparks, and open flames (powder may ignite) and in sealed containers to prevent contamination
Handle with gloves, protective clothing, and dust mask
Shelf life: 24 months under proper storage conditions