Antimony Trioxide
Antimony Trioxide (Sb₂O₃)
High purity antimony trioxide, strict impurity content control, multiple grades according to different application fields, stable purity, high whiteness, uniform particle size, meet professional requirements of different industries.
Product Grades
Flame-Retardant Grade
Applications: Mainly used as flame retardant in plastics, rubber, textile industries, also used as PVC heat stabilizer and glass clarifier
Chemical Grade
Applications: Special raw material for producing ethylene glycol antimony (polyester catalyst) and passivator for petroleum industry
Catalyst Grade
Applications: Mainly used as catalyst in polycondensation reaction of high-quality polyester industry and for preparation of electronic industrial materials
Specification
| Grade | Sb₂O₃ (%) | As₂O₃ (%) | PbO (%) | Fe₂O₃ (%) | CuO (%) | Se (%) | Bi (%) | Whiteness ≥ | Average Particle Size (μm) |
|---|---|---|---|---|---|---|---|---|---|
| 99.90 | ≥99.90 | ≤0.01 | ≤0.01 | ≤0.002 | ≤0.001 | ≤0.0005 | ≤0.002 | 97 | 0.5-0.8 |
| 99.80 | ≥99.80 | ≤0.03 | ≤0.05 | ≤0.005 | ≤0.002 | ≤0.002 | ≤0.0025 | 96 | 0.5-0.8 |
| 99.70 | ≥99.70 | ≤0.06 | ≤0.06 | ≤0.006 | ≤0.002 | ≤0.004 | ≤0.004 | 96 | 0.9-1.2 |
| 99.50 | ≥99.50 | ≤0.06 | ≤0.08 | ≤0.006 | ≤0.002 | ≤0.004 | ≤0.005 | 95 | 0.9-1.2 |
Applications
- Flame retardant industry: As a flame retardant widely used in polyethylene, polypropylene, polystyrene, polyvinyl chloride, nylon, engineering plastics (ABS), rubber, paint, coating, synthetic resin, paper and other materials
- Glass industry: Used as a defoamer to remove bubbles from molten glass
- Chemical fiber industry: Used as catalyst in polyester fiber
- Ceramic enamel: Used as opacifier and whitening agent in enamel and ceramic products
- Petroleum industry: Used as passivator in catalytic cracking and catalytic reforming of heavy oil and residual oil in petroleum
Physical and Chemical Properties
- CAS Number: 1309-64-4
- Appearance: White powder
- Chemical formula: Sb₂O₃
- Molecular weight: 291.5
- Melting point: 656°C
- Boiling point: 1425°C
- Specific gravity: 5.2
- Solubility: Soluble in hydrochloric acid, tartaric acid, insoluble in water and acetic acid