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Product name: | Sodium tungstate | ||
CAS no.: | 13472-45-2 | ||
Molecular formula: | Na2O4W | ||
Molecular weight: | 293.82714 | ||
Structural formula: |
| ||
Item | Index % | Superior product | Technical grade |
Analyical pure | (export 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. | ||
Manufacturing
