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Antimony(III) Oxide (Sb₂O₃) / Antimony(V) Oxide (Sb₂O₅)

Antimony(III) Oxide (Sb₂O₃) (Antimony trioxide) is a white solid and is the most important commercial compound of antimony.

Antimony(V) Oxide (Sb₂O₅) (Antimony pentoxide) is a yellow powdery solid that is very slightly soluble in water.
Typical Applications

Antimony(III) Oxide (Sb₂O₃) is used as a flame retardant for textile materials and as a source to prepare other antimony compounds. It is also used as a catalyst in the production of polyethylene terephthalate (PET plastic) and in the vulcanization of rubber. It is an opacifying agent for glasses, ceramics, and enamels.

Antimony(V) Oxide (Sb₂O₅) is used as a flame retardant for acrylonitrile-butadiene-styrene (ABS) polymer, plastics, rubbers, paper, and textiles. It is a source to prepare other antimony compounds and is employed as a catalyst in certain polymerization and oxidation reactions.

Packaging Options

Jars, pails, drums, multi-ply paper bags, bulk bags, and fiberboard containers


Antimony Oxide Powder TSCA (SARA Title III) Status: Yes- (Toxic)
For further information, please call the EPA Office of Chemical Safety and Pollution Prevention (OCSPP) at 202-564-2902
Antimony(III) Oxide CAS Number: 1309-64-4
Antimony(V) Oxide CAS Number: 1314-60-9
Antimony Oxide UN Number: 1549 / 1550

Sustainable Qualities

Antimony (III) Oxide and Antimony (V) Oxide are considered sustainable materials because they can be recycled and reused multiple times without losing their properties or quality. These Oxides are commonly used as flame retardants and as additives in plastics and other materials. They are also used in the manufacturing of batteries, ceramics, and glass. By using these Oxides, manufacturers can reduce their reliance on virgin materials and contribute to a more circular economy by extending the lifespan of existing resources. Additionally, recycling Antimony Oxides can help reduce the amount of waste generated and reduce the environmental impact of production processes.

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Specifications Available

  • Antimony(III) Oxide (Sb₂O₃) / Antimony(V) Oxide (Sb₂O₅) - Antimony(III) Oxide (Sb₂O₃)
  • Antimony(III) Oxide (Sb₂O₃) / Antimony(V) Oxide (Sb₂O₅) - Antimony(V) Oxide (Sb₂O₅)

Select Antimony(III) Oxide (Sb₂O₃)

  • -100 Mesh Powder
  • -325 Mesh Powder
  • Evaporation Materials
  • Nanopowder <250 nm
  • Sputtering Target

Select Antimony(V) Oxide (Sb₂O₅)

  • -325 Mesh Powder


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