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Description
Sodium tungstate dihydrate is a hydrated sodium salt of tungstic acid. It participates as a catalyst in the preparation of various epoxides.[1] Various crystallographic properties of sodium tungstate dihydrate have been analyzed.
Specification
| Grade | High Purity |
| Formula | Na2WO4 ·2H2O |
| MW | 329.86 |
| CAS | 10213-10-2 |
| Appearance | White fine crystalline powder |
| Identification | Passes test |
| Assay | 99.0-101.0% |
| Insoluble matter | ≤0.01% |
| Titrable free base | ≤0.02% |
| Chloride (Cl) | ≤0.005% |
| Nitrogen Compounds (as N) | ≤0.001% |
| Molybdenum (Mo) | ≤0.001% |
| Sulfate (SO4) | ≤0.01% |
| Arsenic (As) | ≤5ppm |
| Heavy Metals and Iron (as Pb) | ≤0.001% |
| Storage | 18-25℃ |
Application
- Combines with hydrogen peroxide for the oxidation of secondary amines to nitrones.
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Sodium tungstate dihydrate (Na2WO4.2H2O) may be employed in the following studies:
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As a derivatization reagent for the determination of hydrogen peroxide by a fluorimetric method.
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Synthesis of N-hydroxy-desferrioxamine B, a metabolite of the microbial product desferrioxamine B.
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Preparation of highly crystalline CaMoO4, SrMoO4, CaWO4 and SrWO4 nanoparticles.
Sodium tungstate dihydrate may be used in the preparation of aqueous sols of tungsten oxide dihydrate.
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