antimony trioxide, Sb2O3, 1309-64-4


Product Name: antimony trioxide

Equivalent to: sb2o3, st23

Cas No. : 1309-64-4

Molecular Weight: 291.5


Sb2O3 is used as a fire retardant in rubber, plastics, wire & cable, and other composites. It must be used in conjunction with a halogen source, for example, a brominated flame retardant.

Typical Properties

*Sb2O3 99.80% Min.
*PbO 0.026% Max.
*Fe2O3 0.006% Max.
*As2O3 0.05% Max.
*CuO 0.001% Max.
*325 mesh sieve residue 0.05% Max.
*Particle size 0.90 – 1.60 µm
*Whiteness 93.0% Min.
Specific gravity at 20°C 5.20 typical

Purity: 99.5% 99.8% 99.9% available

These properties are typical but do not constitute a specification either in part or as a whole. Specification data is available on request from sales, customer service or customer technical service.


Transportation classification: No regulation for transportation.

Packing: 25kg/bag; 1mt/pallet; 20mt/20’FCL.

TDS / MSDS Download

AntimonyTrioxide sb2o3 1309-64-4-MSDS baoxu chemical

Antimony Trioxide sb2o3 1309-64-4-tds baoxu chemical

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