Product Name: Tungstic Acid or Yellow Tungstic Acid
Chemical Formula: H2WO4
Monocular Mass: 249.86
CAS Number: 7783-03-1
Appearance: Yellow powder
Solubility (Water): insoluble, but slightly dissolved in hot water
Solubility (Other solvent): dissolved in alkali and ammonia water, and hardly dissolved in inorganic acid except for hydrofluoric acid.
HS Code: 2825901100
Boiling Point: 1473℃
Melting Point: Tungstic acid will lose one molecule of water and become tungsten acid anhydride (Tungsten Trioxide) when heated to 100℃.
Application: Mainly used for manufacturing metal tungsten, tungsten wire, tungsten carbide, tungstate ect., and also can be used as printing and dyeing auxiliaries, catalysts and so on.
The main component of tungstic acid is tungsten trioxide (WO3), which takes 90% of the total mass; in addition, there are also impurities such as Al, As, Bi, Ca, Cu, the tungstic acid specification table is as bellow: