Tungsten Special Products

Tungstic Acid

Tungstic Acid
Name
Tungstic Acid
Chemical formula
H2WO4
Formula weight
250
WO3 theoretical content
92.8%

Applications

Raw materials for catalysts

Specifications

WO3
91.0% Min.
Fe
0.005% Max.
Mo
0.005% Max.

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Calcium Tungstate

Calcium Tungstate
Name
Calcium Tungstate
Chemical formula
CaWO4
Formula weight
288
WO3 theoretical content
80.5%

Applications

Raw materials for catalysts, Raw material for sputtering targets

Specifications

WO3
79.0% Min.
NO3
0.5% Max.
Pb
0.001% Max.
Fe
0.005% Max.
Na
2% Max.

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Potassium Tungstate

Potassium Tungstate
Name
Potassium Tungstate
Chemical formula
K2WO4
Formula weight
326
WO3 theoretical content
71.1%

Applications

Raw materials for catalysts

Specifications

WO3
70.0% Min.
Cl
0.02% Max.
SO4
0.02% Max.
Pb
0.001% Max.
Fe
0.001% Max.
Mo
0.01% Max.
pH
8-10 (5% solution)

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Sodium Polytungstate

Sodium Polytungstate
Name
Sodium Polytungstate
Chemical formula
3Na2WO4·9WO3·nH2O or 
Na6[H2W12O40]·mH2O
Formula weight
2,968 (anhydrous basis)
WO3 theoretical content
85.0%

Applications

Heavy liquids for gravity separation

Specifications

WO3
85.0% Min.
Cl
0.002% Max.
SO4
0.005% Max.
Mo
0.01% Max.
Fe
0.001% Max.
pH
4.0-6.0 (5% solution)

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Product Specifications

You can download the product specifications from the below.

Specifications Download

Contact

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