Antimony trioxide

We are manufacturing Antimony Trioxide in various forms.
ie; AR, LR and Technical Grade. These all grades are available in 5 kg pack to 50 kg packing in HDPE Drums or Bags.

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. Like most polymeric oxides, Sb2O3 dissolves in aqueous solutions only with hydrolysis

Antimony trioxide is an amphoteric oxide, it dissolves in aqueous sodium hydroxide solution to give the meta-antimonite NaSbO2, which can be isolated as the Trihydrate. Antimony trioxide also dissolves in concentrated acids to give the corresponding salts, which hydrolyzes upon dilution with water. With nitric acid, the trioxide is oxidized to antimony(V) oxide.

Technical Details

Product Name : Antimony trioxide
CAS No: (1309-64-4)

Properties


Specifications

Antimony Trioxide

Assay

99.5%

pH value

2-12

Molecular Formula

Sb2O3

Appearance

White Powder

Odor

Odorless

Density

5.2 g/cm3, α-form

67 g/cm3 β-form

Melting Point

656 °C (1,213 °F; 929 K)

Boiling Point

1,425 °C (2,597 °F; 1,698 K) (sublimes)

Solubility

Soluble in acid

Solubility in Water

Dissolved concentration of 370 ± 37 µg/L was obtained with a loading of 10 mg/L after 7 days of exposure.
Temperature varied between 20.8°C (t=0; start of the test) and 22.9°C

Arsenic (As)

0.05% Max.

Lead (Pb)

0.05% Max.

Iron (Fe)

50 PPM.