Sodium tungstate |
| Product name: |
Sodium tungstate |
| English name: |
Sodium tungstate |
| CAS no.: |
13472-45-2 |
| Molecular formula: |
Na2O4W |
| Molecular weight: |
293.82714 |
| Structural formula: |
 |
|
Item
|
Index %
Analyical pure
|
Superior product
(export grade)
|
Technical grade
|
|
WO3
|
≥69.0
|
≥69.0
|
≥68.0
|
|
Mo
|
≤0.002
|
≤0.02
|
≤0.04
|
|
As
|
≤0.001
|
≤0.002
|
|
|
Cu
|
≤0.0002
|
|
|
|
Fe
|
≤0.001
|
≤0.002
|
|
|
SO4
|
|
≤0.02
|
0.01
|
|
Si
|
≤0.004
|
|
≤0.04
|
|
Water insoluble matter
|
≤0.005
|
≤0.01
|
|
|
PH
|
8-9
|
8-9
|
|
|
Heavy metal (Pb)
|
≤0.001
|
≤0.002
|
|
|
Cl
|
|
≤0.03
|
|
|
| Uses: |
It is intermediate product for producing tungsten products, it can also be used in mordant, catalyst, pigmeng and analytical reagent, in textile industry as weighting agent, etc. |
| Packing: |
25KG, 50KG iron drum or woven bag. |
|
|
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