Antimony Trioxide CAS 1309-64-4 – High-Efficiency Flame Retardant Synergist for Plastics and Rubber

BLIT Chemical manufacturer Antimony Trioxide CAS 1309-64-4, also known as Sb₂O₃, is a widely used inorganic flame retardant synergist designed to enhance the performance of halogen-based flame retardant systems. It is supplied as a high-purity white fine powder with excellent dispersion, thermal stability, and chemical consistency.

Antimony Trioxide does not act as a primary flame retardant but works synergistically with brominated and chlorinated flame retardants. During combustion, it reacts to form antimony halides, which effectively inhibit flame propagation and reduce heat release. This mechanism significantly improves fire resistance in plastics, rubber, coatings, and textile applications.

Thanks to its fine particle size and controlled purity, Antimony Trioxide from BLIT Chemical ensures reliable processing and consistent performance across a wide range of industrial formulations. It is commonly used in PVC, engineering plastics, cable insulation, adhesives, and coatings where fire safety compliance is essential.

Antimony Trioxide Specification

Antimony Trioxide Applications

Flame Retardant Synergist in PVC and Plastics

Antimony Trioxide is widely used in plastic formulations to enhance flame retardant efficiency.

Key advantages include:

• Improves flame retardant performance of halogen systems
• Reduces overall additive dosage
• Enhances thermal stability
• Helps meet UL94 and other fire safety standards

Typical applications include PVC, PE, PP, ABS, and engineering plastics.

Wire, Cable, and Rubber Applications

In cable insulation and rubber compounds, Antimony Trioxide provides:

• Enhanced fire resistance
• Lower smoke emission
• Improved durability under high temperatures

It is essential for flame-retardant wire and cable sheathing materials.

Coatings, Adhesives, and Textile Back-Coating

Antimony Trioxide is also used in surface coatings and textile treatments:

• Fire-retardant coatings
• Adhesives and sealants
• Textile back-coatings for upholstery

Its fine particle size ensures uniform distribution and consistent performance.

Glass, Ceramics, and Catalyst Applications

Beyond flame retardancy, Antimony Trioxide is used as:

• Opacifier in glass and ceramics
• Catalyst in PET production
• Additive in pigments and specialty chemicals

BLIT CHEMICAL Antimony Trioxide

• High purity and stable quality
• Excellent synergistic flame retardant effect
• Fine particle size for better dispersion
• Wide compatibility with industrial materials
• Reliable performance in safety-critical applications

Storage & Handling

Store in a cool, dry, and well-ventilated area. Avoid dust generation and keep containers tightly closed.

Usage Guidelines

• Typical dosage: 2% – 10%, depending on system requirements
• Used together with halogen-based flame retardants
• Ensure proper dispersion during processing
• Use appropriate protective equipment during handling

Packaging

25 kg bags or jumbo bags, or customized packaging based on customer requirements.