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Anda Nonferrous Metals
Tungstic acid
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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