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CAS:10213-10-2
Synonyms: SODIUM TUNGSTATE 2H2O; SODIUM TUNGSTATE-2-HYDRATE
Molecular Formula:H2NaO5W-
Molecular Weight:288.84
Appearance: White Crystalline Powder
EINECS:600-275-2
What Is Sodium Tungstate Dihydrate
Colorless crystal or white rhombic crystal. Soluble in water, slightly alkaline. Insoluble in ethanol, slightly soluble in ammonia. It is used for the manufacture of metal tungsten, tungstic acid and tungstate salts. Used as mordant, pigment and catalyst. It can also be used as fabric fireproof agent and analytical chemical reagent.
Description
|
Item
|
Specifications
|
|
WO3
|
≥69.0%
|
|
MO
|
≤0.02%
|
|
As
|
≤0.002%
|
|
Cu
|
——
|
|
Fe
|
≤0.002%
|
|
SO4
|
≤0.02%
|
|
Si
|
——
|
|
Water insoluble
|
≤0.01%
|
|
PH
|
8~9
|
|
Heavy metal (as Pb)
|
≤0.002%
|
|
Cl
|
≤0.03%
|
|
Conclusion
|
The results conforms with Enterprise standards
|
Application
Sodium tungstate dihydrate may be used in the preparation of aqueous sols of tungsten oxide dihydrate.
Packing
25kgs/drum,9tons/20’container
25kgs/bag,20tons/20’container
