Antimony(III) oxide
Antimony(III) oxide (CAS: 1309-64-4, Formula: Sb2O3) is an inorganic compound with a molecular weight of 291.52 g/mol. It appears as a white solid. Antimony(III) oxide is primarily utilised as a flame retardant synergist in plastics and textiles, and also finds applications in glass manufacturing and as a catalyst in chemical synthesis. Tech Serve Solutions supplies this compound with an assay of ≥98.0%.
Flame Retardant Synergist
Antimony(III) oxide is widely used as a synergist in conjunction with halogenated compounds to enhance the flame retardant properties of various polymers and textiles. It significantly reduces the flammability of materials, improving safety standards.
Glass and Ceramics Production
In the glass industry, Antimony(III) oxide acts as a fining agent, helping to remove bubbles and create clearer glass. It is also used as a decolorizing agent and can impart specific optical properties to glass.
Catalysis in Chemical Synthesis
This compound serves as a catalyst in several organic synthesis reactions. Notably, it is employed in the production of polyethylene terephthalate (PET) polymers, contributing to efficient polymerisation processes.
| Molecular weight | 291.52 |
|---|---|
| Linear formula | Sb2O3 |
| Assay | ≥98.0% (RT) |
| Boiling point | 1550 °C(lit.) |
| Melting point | 655 °C(lit.) |
Hazard statements
- H351Suspected of causing cancer
Precautionary statements
- P281Use personal protective equipment as required
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Transport (UN / ADR) | UN 3077 9 / PGIII |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 40 |
| Safety statements (S) | 22-36/37 |
| Cation traces | Ca: ≤20 mg/kgCd: ≤20 mg/kgCo: ≤5 mg/kgCr: ≤20 mg/kgCu: ≤5 mg/kgFe: ≤50 mg/kgK: ≤20 mg/kgMg: ≤5 mg/kgMn: ≤5 mg/kgNa: ≤20 mg/kgNi: ≤10 mg/kgPb: ≤250 mg/kgZn: ≤20 mg/kg |
| Anion traces | chloride (Cl-): ≤500 mg/kgsulfate (SO42-): ≤100 mg/kg |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Antimony(III) oxide used for?
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Antimony(III) oxide is primarily used as a flame retardant synergist, in glass and ceramics production, and as a catalyst in chemical synthesis, particularly for PET polymers.
What are the CAS number and chemical formula for Antimony(III) oxide?
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The CAS number for Antimony(III) oxide is 1309-64-4, and its chemical formula is Sb2O3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Antimony(III) oxide with an assay of ≥98.0%. We do not represent this product as USP, BP, or EP grade unless explicitly stated.
What are the safety considerations when handling Antimony(III) oxide?
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Antimony(III) oxide is classified with the GHS symbol GHS08 and carries the hazard statement H351 (Suspected of causing cancer). Appropriate personal protective equipment, including a dust mask type N95, eyeshields, and gloves, should be used. Handle in a well-ventilated area and avoid dust formation.
How is Antimony(III) oxide packaged and shipped?
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Antimony(III) oxide is shipped as UN 3077, Class 9, Packing Group III. Specific packaging details for export can be confirmed upon request.
How can I request a sample or quote for Antimony(III) oxide?
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To request a sample or quote, please contact our sales team via the website or provide your details through the product inquiry form.
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