Product Introduction
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.
TDS
Scope of Application
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.
Pigment & Material Production
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.
Chemical & Pharmaceutical Uses
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.
