Tungsten trioxide

Tungsten trioxide

Product name: Tungsten trioxide
Other names: Tungstic anhydride; Tungsten(VI) oxide; Tungstic oxide 
CAS: 1314-35-8 
Molecular formula: WO3 
Molecular Weight:  231.84 g/mol 
EINECS No.: 215-231-4
Grade Standard: Electron Grade, Industrial Grade, Reagent Grade
Purity: 99.9
Appearance: powder
Application: Industrial
Melting point: 1470-1475 °C
Boiling point: 1837°C (estimate)
Density: 7.16 g/mL at 25 °C(lit.)
Color: Yellow to greenish-yellow
Water Solubility: insoluble

Tungsten trioxide is a chemical compound containing oxygen and the transition metal tungsten. It is obtained as an intermediate in the recovery of tungsten from its minerals.Tungsten trioxide is used for many purposes in everyday life. It is frequently used in industry to manufacture tungstates for x-ray screen phosphors and also for fireproofing fabrics. Due to its rich yellow color, WO3 is also used as a pigment in ceramics and paints.


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