Antimony Trioxide

Availability

Special and quality requirements for antimony trioxide, antimonious oxide, antimony(iii) oxide are available upon request: antimony trioxide is normally available in various concentrations.

Formula

Sb2O3

CAS

1309-64-4

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Antimony Trioxide

Distributor of antimony trioxide

Description

Antimony trioxide is the inorganic compound with the formula Sb2O3. It is the most important commercial compound of antimony. It is found in nature as the minerals valentinite and senarmontite. Antimony trioxide is mainly produced via the smelting of stibnite ore, which is oxidised to crude Sb2O3 using furnaces operating at approximately 850 to 1,000 °C.

Appearance

Antimony trioxide is a white crystalline powder.

Solubility

Antimony trioxide is not soluble in water and in nitric acid, not very soluble in diluted H2S04 and HCI but more soluble in these acid concentrates.

Uses

Antimony trioxide is widely used as a flame retardant for rubber and plastic materials. In its pure state it is used in pharmaceutical products. In the chemical industry antimony trioxide is used as an intermediate for the preparation of metallic antimony; in the glass industry it is used to de-colourise glass, in the ceramic industry and in galvanic technology.

Classification

The toxicity of antimony trioxide is topical because it is a likely byproduct of the combustion of some materials "fireproofed" with antimony compounds. The oxides of arsenic, antimony, and bismuth are comparable in their toxicity, but their volatilities differ widely. Antimony trioxide has suspected carcinogenic potential for humans.

Safety

Request safety data sheet (SDS) and refer to points 4, 5, 6, 7, 8, 10, 13, 14, 15.

Specifications

Technical specifications are provided on request according to the application: antimony trioxide is stored in original packing and under conditions mentioned on the safety data sheet (SDS).

Synonyms

Antimony trioxide, antimonious oxide, antimony(III) oxide