Antimony Trioxide (Sb₂O₃) is a white inorganic compound widely used as a flame-retardant synergist, plastics additive, rubber additive, pigment, glass additive, and specialty chemical raw material. It is particularly valued for enhancing the flame-retardant performance of halogen-containing polymer systems.
As a reliable Antimony Trioxide supplier in India, we offer consistent-quality material in different grades and particle-size specifications for plastics, rubber, coatings, textiles, electronics, and other industrial applications. Bulk supply and export packaging are available.
General Specification
| Parameter | Specification | Result |
|---|---|---|
| Appearance | White fine powder | White fine powder |
| Antimony Trioxide (Sb₂O₃) | NLT 99.0% | 99.50% |
| Antimony (Sb) | 82.0 – 84.0% | 83.20% |
| Moisture | NMT 0.50% | 0.15% |
| Arsenic (As) | NMT 0.10% | 0.03% |
| Lead (Pb) | NMT 0.10% | 0.04% |
| Iron (Fe) | NMT 0.05% | 0.01% |
| Copper (Cu) | NMT 0.01% | 0.003% |
| Selenium (Se) | NMT 0.01% | 0.002% |
| Water Insoluble Matter | NMT 0.10% | 0.03% |
| Whiteness | NLT 95% | 98% |
| Particle Size | As per grade | As specified |
Specifications may vary according to grade, manufacturing process and application. Batch-specific COA and detailed technical specifications are available on request. For more detailed specification and technical data please Contact Us.
Technical Specification
| Parameter | Details |
|---|---|
| Product Name | Antimony Trioxide |
| Other Names | Antimony(III) Oxide, Antimony Oxide, Antimony Sesquioxide |
| Chemical Formula | Sb₂O₃ |
| Molecular Weight | 291.52 g/mol |
| CAS Number | 1309-64-4 |
| HS Code | 28258000 |
| Appearance | White fine powder |
| Odor | Odorless |
| Solubility | Practically insoluble in water |
| Chemical Class | Inorganic oxide |
Available Grades
We supply:
- Antimony Trioxide 99%
- Flame Retardant Grade Antimony Trioxide
- Plastics Grade Antimony Trioxide
- Rubber Grade Antimony Trioxide
Applications
Flame Retardant Industry
Antimony Trioxide is primarily used as a flame-retardant synergist, particularly together with halogen-containing flame-retardant systems.
It is used in:
- PVC compounds
- Rubber
- Plastics
- Cable compounds
- Wire insulation
- Textiles
- Coatings
- Electrical components
Rather than generally functioning as the sole flame retardant, Antimony Trioxide is commonly used to enhance the effectiveness of compatible halogenated flame-retardant systems.
Plastics Industry
Used in:
- PVC
- Polyolefin compounds
- Engineering plastics
- Plastic masterbatch
- Injection-moulded components
- Flame-retardant polymer formulations
Rubber Industry
Used in selected rubber formulations requiring improved flame-retardant performance.
Applications include:
- Cable rubber
- Conveyor belts
- Rubber sheets
- Industrial rubber products
- Flame-retardant rubber compounds
Paints & Coatings
Used as a functional component in selected:
- Flame-retardant coatings
- Protective coatings
- Industrial coatings
- Polymer coatings
Textile Industry
Used in certain flame-retardant textile formulations, particularly where antimony-based synergistic systems are required.
Glass & Ceramics
Antimony compounds can be used in selected glass and ceramic formulations for specialized processing and optical characteristics.
Chemical Manufacturing
Used as a raw material for producing various antimony compounds and specialty chemicals.
Advantages
- High Sb₂O₃ content
- Effective flame-retardant synergist
- Good dispersion in suitable formulations
- Consistent particle size
- Suitable for plastics and rubber compounds
- Available in different purity grades
- Suitable for industrial-scale applications
Packaging Details
Available in:
- 25 kg HDPE bags with inner liner
- 25 kg PP bags
- 500 kg / 1000 kg jumbo bags
- Customized export packaging available
For export shipments, packaging can be selected according to destination and handling requirements.
Storage Conditions
- Store in a cool, dry and well-ventilated area.
- Protect from moisture and contamination.
- Avoid generating unnecessary dust during storage and handling.
Handling Precautions
- Avoid inhalation of Antimony Trioxide dust.
- Use suitable respiratory protection where airborne dust may occur.
- Wear protective gloves and safety eyewear.
- Provide adequate ventilation during handling.
- Avoid direct contact with eyes and skin.
- Follow the product-specific SDS/MSDS for occupational handling requirements.
Why Choose Us?
- Reliable Antimony Trioxide supplier in India
- Bulk supply capability
- Consistent quality and particle size
- Competitive bulk pricing
- MSDS/SDS and TDS support
- Global shipping support
FAQs
What is Antimony Trioxide used for?
Antimony Trioxide is mainly used as a flame-retardant synergist in plastics, rubber, PVC, textiles, coatings, cables and electrical applications. It is also used in glass, ceramics and specialty chemical manufacturing.
What is the CAS number of Antimony Trioxide?
The CAS number of Antimony Trioxide is 1309-64-4.
What is the chemical formula of Antimony Trioxide?
The chemical formula is Sb₂O₃, and its molecular weight is approximately 291.52 g/mol.
What is Antimony Trioxide also called?
It is also known as Antimony(III) Oxide, Antimony Oxide and Antimony Sesquioxide.
Why is Antimony Trioxide used in flame retardants?
Antimony Trioxide is primarily used as a synergist with compatible halogen-containing flame-retardant systems, where it can significantly improve flame-retardant performance.
Is Antimony Trioxide used in PVC?
Yes. Antimony Trioxide is widely used in selected PVC flame-retardant formulations, particularly in combination with suitable halogenated systems.
Is Antimony Trioxide used in rubber?
Yes. It is used in certain rubber compounds to enhance flame-retardant performance.
What grades of Antimony Trioxide are available?
Common grades include 99%, 99.5%, high-purity, flame-retardant, plastics, rubber and fine-particle grades.
Is Antimony Trioxide soluble in water?
Antimony Trioxide is practically insoluble in water.
What particle size of Antimony Trioxide is available?
Particle size varies according to the intended application. Fine and customized particle-size grades can be supplied according to formulation requirements.
Do you supply Antimony Trioxide in bulk?
Yes. We supply Antimony Trioxide in 25 kg bags/drums and jumbo bags for bulk industrial and export requirements.
Do you provide COA and MSDS for Antimony Trioxide?
Yes. Batch-specific COA, MSDS/SDS and technical documentation can be provided for supplied material.
Which industries use Antimony Trioxide?
Major applications include plastics, rubber, PVC, cables, textiles, coatings, electrical components, glass, ceramics and specialty chemicals.
Is Antimony Trioxide suitable for flame-retardant plastics?
Yes. It is widely used as a flame-retardant synergist in compatible polymer systems, particularly where halogen-based flame-retardant formulations are used.
