Antimony trioxide

Antimony trioxide, technical – is a chemical raw material used as a flame retardant and a binder in the polymer processing industry and rubber components. In the industry producing high-end consumer ceramics, being the basis for pigments. Used for the production of high transparency glass, enamels, semiconductors and adhesives.

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Antimony trioxide (Sb2O3) is an inorganic chemical compound from the group of non-metal oxides, the most common antimony compound on sale. Produced from the smelting of antimony ores from minerals such as senarmontite and valentinite. It is used for the production of catalysts. In the glass industry for the production of high-class glass, characterized by high transparency and clarity. Antimony trioxide is the basis for pigments in ceramics. Antimony trioxide used for plastic and rubber products increases their fire resistance. In its pure form for the formulation of preparations used in the pharmaceutical industry. Antimony trioxide in the chemical industry is used to obtain metallic antimony.



  • CAS No .: 1309-64-4
  • Name: Antimony trioxide
  • The content of the main ingredient: min. 99.6%
  • Form: solid
  • White color
  • Odor: no smell
  • pH: no data available
  • Melting point: 656 ° C
  • Boiling point: 1425 ° C
  • Auto-ignition temperature: not applicable
  • Flash point: not applicable
  • Explosion limits: not applicable
  • Steam pressure: 1.3 hPa (574 ° C), 1013 hPa (1550 ° C)
  • Average grain size: 0.8-1.4 um
  • Density: 5.9 g / cm3 (20 ° C)
  • Bulk weight: about 800 – 1300 kg / m3
  • Solubility: in water: 2.7 mg / l (20 ° C), soluble in hydrochloric acid; in organic solvents: no data

Description automatically translated, binding is the Polish language version.






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