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Antimony Trioxide
SINOBIO
2825800000
Antimony Trioxide (ATO), with the chemical formula Sb₂O₃ and CAS No. 1309-64-4, is a premium inorganic compound widely used across industrial sectors for its exceptional flame-retardant properties and versatility. As a key product from Sinobio Chemistry, our antimony trioxide powder is available in high-purity grades (99.5%, 99.8%, and 99.9%) to meet stringent industrial standards.
Characterized by its white crystalline appearance and fine particle size (1-3μm, customizable per customer needs), this compound exhibits remarkable thermal stability—boiling at 1550°C and melting at 655°C. It dissolves in concentrated hydrochloric acid, sulfuric acid, and alkali solutions, while being slightly soluble in water, making it adaptable to diverse manufacturing processes. Whether as a flame retardant, pigment, or chemical intermediate, our antimony trioxide delivers consistent performance for industrial applications.
Parameter | Specification |
Product Name | Antimony Trioxide (ATO) |
CAS Number | 1309-64-4 |
Molecular Formula | O₃Sb₂ |
Purity | 99% min (99.5%, 99.8%, 99.9% available) |
Appearance | White Powder |
Particle Size | 1-3μm (customizable) |
Melting Point | 656°C |
Boiling Point | 1456°C |
Sb₂O₃ Content | ≥99.58% |
As₂O₃ Content | ≤0.020% |
PbO Content | ≤0.055% |
Fe₂O₃ Content | ≤0.0038% |
CuO Content | ≤0.0012% |
Se Content | ≤0.0010% |
Whiteness | ≥95.3% |
Net Weight (per batch) | 20 MT |
Sample Availability | Available |
As a top-tier additive flame retardant, antimony trioxide is indispensable in plastics, rubber, textiles, and electronics manufacturing. It works synergistically with other flame retardants and smoke suppressants to enhance fire resistance through three critical mechanisms:
Surface Barrier: Melts at high temperatures to form a protective film, isolating the material from oxygen.
Endothermic Cooling: Absorbs heat during combustion, lowering the material’s temperature below ignition points.
Oxygen Dilution: Vaporizes at extreme temperatures, reducing oxygen concentration in the surrounding air to suppress flames.
With a whiteness rating of ≥95.3%, our antimony trioxide serves as a high-quality white pigment in paints, white glass, and enamel production. Its excellent opacity and stability make it ideal for coloring coatings, while its masking properties improve the visual appeal of finished products. It also functions as a filler in cement, enhancing structural strength in construction materials.
In chemical synthesis, antimony trioxide acts as a catalyst for producing antimony-based compounds. In pharmaceuticals, it is used as a mordant and anti-light agent, and as a precursor for antimony potassium tartrate—an important compound in medicinal formulations. Its high purity (up to 99.9%) also makes it suitable for high-precision laboratory reagents.
To ensure product integrity during transit, we offer flexible packaging tailored to bulk and small-batch orders:
Standard Packaging: 25kg kraft bags, shrink-wrapped and palletized (1 metric ton per pallet).
Bulk Packaging: 500kg or 1000kg super sacks for large-scale industrial use.
Custom Packaging: 1kg, 5kg, or 10kg options for small-volume testing or specialized needs.
Samples are available upon request, allowing you to verify quality before placing bulk orders.
Our industrial-grade antimony trioxide powder combines high purity, consistent performance, and versatile applications—making it the preferred choice for manufacturers in flame retardancy, pigments, and chemicals. For wholesale pricing, technical details, or to inquire about customization, contact Sinobio Chemistry today.
Antimony Trioxide (ATO), with the chemical formula Sb₂O₃ and CAS No. 1309-64-4, is a premium inorganic compound widely used across industrial sectors for its exceptional flame-retardant properties and versatility. As a key product from Sinobio Chemistry, our antimony trioxide powder is available in high-purity grades (99.5%, 99.8%, and 99.9%) to meet stringent industrial standards.
Characterized by its white crystalline appearance and fine particle size (1-3μm, customizable per customer needs), this compound exhibits remarkable thermal stability—boiling at 1550°C and melting at 655°C. It dissolves in concentrated hydrochloric acid, sulfuric acid, and alkali solutions, while being slightly soluble in water, making it adaptable to diverse manufacturing processes. Whether as a flame retardant, pigment, or chemical intermediate, our antimony trioxide delivers consistent performance for industrial applications.
Parameter | Specification |
Product Name | Antimony Trioxide (ATO) |
CAS Number | 1309-64-4 |
Molecular Formula | O₃Sb₂ |
Purity | 99% min (99.5%, 99.8%, 99.9% available) |
Appearance | White Powder |
Particle Size | 1-3μm (customizable) |
Melting Point | 656°C |
Boiling Point | 1456°C |
Sb₂O₃ Content | ≥99.58% |
As₂O₃ Content | ≤0.020% |
PbO Content | ≤0.055% |
Fe₂O₃ Content | ≤0.0038% |
CuO Content | ≤0.0012% |
Se Content | ≤0.0010% |
Whiteness | ≥95.3% |
Net Weight (per batch) | 20 MT |
Sample Availability | Available |
As a top-tier additive flame retardant, antimony trioxide is indispensable in plastics, rubber, textiles, and electronics manufacturing. It works synergistically with other flame retardants and smoke suppressants to enhance fire resistance through three critical mechanisms:
Surface Barrier: Melts at high temperatures to form a protective film, isolating the material from oxygen.
Endothermic Cooling: Absorbs heat during combustion, lowering the material’s temperature below ignition points.
Oxygen Dilution: Vaporizes at extreme temperatures, reducing oxygen concentration in the surrounding air to suppress flames.
With a whiteness rating of ≥95.3%, our antimony trioxide serves as a high-quality white pigment in paints, white glass, and enamel production. Its excellent opacity and stability make it ideal for coloring coatings, while its masking properties improve the visual appeal of finished products. It also functions as a filler in cement, enhancing structural strength in construction materials.
In chemical synthesis, antimony trioxide acts as a catalyst for producing antimony-based compounds. In pharmaceuticals, it is used as a mordant and anti-light agent, and as a precursor for antimony potassium tartrate—an important compound in medicinal formulations. Its high purity (up to 99.9%) also makes it suitable for high-precision laboratory reagents.
To ensure product integrity during transit, we offer flexible packaging tailored to bulk and small-batch orders:
Standard Packaging: 25kg kraft bags, shrink-wrapped and palletized (1 metric ton per pallet).
Bulk Packaging: 500kg or 1000kg super sacks for large-scale industrial use.
Custom Packaging: 1kg, 5kg, or 10kg options for small-volume testing or specialized needs.
Samples are available upon request, allowing you to verify quality before placing bulk orders.
Our industrial-grade antimony trioxide powder combines high purity, consistent performance, and versatile applications—making it the preferred choice for manufacturers in flame retardancy, pigments, and chemicals. For wholesale pricing, technical details, or to inquire about customization, contact Sinobio Chemistry today.
