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Tungstic acid  

H2WO4

Chemical formula: H2WO4
Properties: yellow powder, insoluble in water, soluble in caustic soda, soda ash, ammonia solution can generate tungstate.
Specifications:

Grade
H2WO4-1
H2WO4-2
WO3 (%)
88.0-91.0
88.0-91.0
Impurity content
(as WO)
not more than
%
Al
0.001
0.002
As
0.005
0.005
Bi
0.001
/
Ca
0.002
0.005
Co
0.002
/
Cu
0.001
/
Fe
0.001
0.003
K+Na
0.015
0.020
Mg
0.001
0.002
Mn
0.001
/
Mo
0.006
0.01
Ni
0.001
/
P
0.001
0.005
Pb
0.0001
/
S
0.001
0.003
Si
0.003
0.005
Sb
0.001
/
Sn
0.0005
0.001
Ti
0.001
0.002
V
0.001
0.002

Uses: Used in the production of tungsten powder, tungsten bar, tungsten wire, tungsten carbide and other chemical products.
Packing: 25kg Cardboard barrel or plastic woven bag .
Not: special specifications are negotiable.

 
     
 
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