Chemical Product Library / Reference

Antimony trioxide

Chemical identity, technical indicators, performance and application reference. Confirm specifications and regulatory suitability against supplier documentation.

Molecular structure for Antimony trioxide

Chemical identity

English nameAntimony trioxide
English synonymsATO;Antimony trioxide;Diantimony trioxide
Chinese name三氧化二锑
Chinese synonyms锑白;三氧化二锑;阻燃剂三氧化二锑
Chemical categoryFlame Retardants
CAS No.1309-64-4
EINECS No.215-175-0
Molecular formulaSb2O3
Molecular weight291.52
PubChem structure images are reference depictions, not proof of composition, purity, grade, or regulatory status. Mixtures and polymers may not have a single representative structure.

Technical indicators

Sb2O3 content ≥99.5%; As ≤0.05%; Pb ≤0.1%; Fe ≤0.005%; whiteness ≥95%

Performance characteristics

White powder, flame retardant synergist, significantly enhances effectiveness of halogenated flame retardants

Application scenarios

Synergist for halogenated flame retardants in plastics, rubber, textiles, coatings