Fine Intermediate

CAS# 7783-03-1

Molecular Formula : H2O4W

Specification: WO3% 88%-91% 

Packing: 25kg/drum 

Application: Mainly used for producing tungsten, tungsten wire, tungsten salts and cementedcarbide, also used as petrochemical catalysts, auxiliaries and lubricants.

Profile
Tungstic acid refers to hydrated forms of tungsten trioxide, WO3. The simplest form, the monohydrate, is WO3·H2O, the dihydrate WO3·2H2O is also known. The solid state structure of WO3·H2O consists of layers of octahedrally coordinated WO5(H2O) units where 4 vertices are shared. The dihydrate has the same layer structure with the extra H2O molecule intercalated between the layers. The monohydrate is a yellow solid and insoluble in water. 
 

Technical Data Sheet 

Items	Specification	Results
WO3	88.0-91.0%	89.06%
Ca	0.002%max	0.0005%
Cu	0.001%max	0.0003%
Fe	0.001%max	0.0007%
K	0.015%max	0.0005%
Mg	0.001%max	0.0006%
Al	0.001%max	0.0003%
Mo	0.006%max	0.005%
Pb	0.001%max	0.0005%
Si	0.003%max	0.002%