| CAS No.: | 10213-10-2 |
| Molecular Weight: | 329.85 g/mol |
| Chemical Formula | Na2WO4-2H2O |
Sodium tungstate is the inorganic compound with the formula Na2WO4. This white, water-soluble solid is the sodium salt of tungstic acid. It is useful as a source of tungsten for chemical synthesis. It is an intermediate in the conversion of tungsten ores to the metal.
General Specifications of Sodium Tungstate
Appearance: White Crystalline Powder
Assay: 99% minimum
WO3: 69.0% minimum
Clarity of Solution: 2% solution in distilled water is clear.
Cl: 0.02% maximum
SO4: Maximum 0.01%
Mo: 0.01% maximum
Fe: 100 ppm maximum
Insoluble matter: Maximum 0.01%
pH (5% solution): 8~10
Sodium Tungstate Dihydrate Analytical Reagent
Na2WO4 . 2H2O --- Formula Weight 329.86
CAS Number 10213-10-2
REQUIREMENTS
Assay: 99.0-101.0% Na2WO4 . 2H2O
MAXIMUM ALLOWABLE
Insoluble matter: 0.01%
Titrable free base: 0.02 meq/g
Chloride (Cl): 0.005%
Molybdenum (Mo): 0.001%
Nitrogen compounds (as N): 0.001%
Sulfate (SO4): 0.01%
Heavy metals and iron (as Pb): 0.001%.
