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Antimony Pentoxide

CAS No.: 1314-60-9
Molecular Weight: 323.52 g/mol
Chemical Formula Sb2O5-(nH2O)

Antimony Pentoxide (Sb2O5) is a chemical compound of antimony and oxygen. It always occurs in hydrated form, Sb2O5-nH2O. Antimony pentoxide finds use as a flame retardant in ABS and other plastics and as a flocculant in the production of titanium dioxide, and is sometimes used in the production of glass, paint and adhesives. It is also used as an ion exchange resin for a number of cations in acidic solution including Na+ (especially for their selective retentions), and as a polymerization and oxidation catalyst.

Specifications of Antimony Pentoxide:
Molecular Formula: Sb2O5
Assay: 85% minimum.
Molar Mass: 323.52 g/mol
Appearance: Yellow Powder Solid
Relative Density: 3.8 to 3.9
Melting Point: 380C (decomposes)
Solubility in water: 0.3 g/100 mL
Solubility: Insoluble in nitric acid
pH: 5-7
As: 0.5% maximum
Pb: 0.1% maximum
Fe: 100 ppm maximum
Ni: 50 ppm maximum
Cu: 50 ppm maximum.