Antimony Sulfide Sb2S3 CAS 1345-04-6

Antimony Sulfide (Sb₂S₃) – Versatile Industrial Material for Pyrotechnics, Rubber, and Glass

Basic Information

• Product Name: Antimony trisulfide (Antimony sulfide)

• CAS Number: 1345-04-6 (corrected; the query listed both 1345-04-6 and 1315-04-4; the correct CAS for Sb₂S₃ is 1345-04-6)

• Molecular Formula: Sb₂S₃

• Appearance: Black to reddish crystalline powder

• Sb Content: 50–72% (typical)

Overview
Antimony sulfide is an inorganic compound composed of antimony and sulfur. It occurs naturally as the mineral stibnite and is also produced synthetically. It is widely used in various industrial applications due to its unique properties, including its ability to act as a pigment, a vulcanizing agent, and a component in pyrotechnic compositions.

Applications

• Pyrotechnics: Used in the manufacture of matches, fireworks, and flash powders, where it acts as a fuel and produces bright white sparks.

• Antimony salts production: Serves as a raw material for the production of various antimony salts and compounds.

• Colored glass: Imparts yellow to orange-red hues to glass and ceramics, used in specialty glass manufacturing.

• Rubber industry: Acts as a vulcanizing agent in rubber compounds, improving elasticity and heat resistance.

• Military applications: Used in tracer ammunition, smoke screens, and incendiary devices.

• Other uses: As a pigment in paints and coatings, and as a semiconductor material in certain electronic applications.

Key Properties

• High refractive index – contributes to optical effects in glass.

• Good thermal stability – suitable for high-temperature applications.

• Low solubility in water – stable under normal conditions.

• Reacts with strong oxidizers and acids, releasing hydrogen sulfide.

Handling and Storage

• Store in a cool, dry, well-ventilated area, away from strong oxidizers and acids.

• Keep containers tightly sealed to prevent contamination and moisture absorption.

• Use appropriate personal protective equipment (gloves, safety goggles, dust mask) when handling.

• Avoid inhalation of dust and contact with skin and eyes.

Packaging
Available in 25 kg bags, 50 kg drums, and custom packaging upon request.

Quality Assurance
Each batch is tested for Sb content, particle size, and impurities to ensure consistent product quality.