Sodium tungstate dihydrate
SIGALD/223336 - ACS reagent, ≥99%
Synonym: Tungstic acid sodium salt dihydrate
CAS Number: 10213-10-2
Empirical Formula (Hill Notation): Na2O4W · 2H2O
Molecular Weight: 329.85
EC Number: 236-743-4
MDL Number: MFCD00149190
Linear Formula: Na2WO4 · 2H2O
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: 223336-100G
This image depicts SKU: 223336-100G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: 223336-500G
This image depicts SKU: 223336-500G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material.
This image depicts SKU: 223336-5G
This image depicts SKU: 223336-5G
| anion traces | chloride (Cl-): ≤0.005% |
| sulfate (SO42-): ≤0.01% | |
| assay | ≥99% |
| cation traces | heavy metals and iron (as Pb): ≤0.001% |
| Mo: ≤0.001% | |
| form | crystalline powder |
| grade | ACS reagent |
| impurities | ≤0.01% insolubles |
| ≤0.02 meq/g Titr. free base | |
| InChI | 1S/2Na.2H2O.4O.W/h;;2*1H2 |
| InChI key | WPZFLQRLSGVIAA-UHFFFAOYSA |
| mp | 698 °C (lit.) |
| pH | 9-11.5 (20 °C, 100 g/L) |
| Quality Level | 200  |
| reaction suitability | reagent type: catalyst core: tungsten |
| SMILES string | O.O.[Na+].[Na+].[O-][W]([ |
| Application: | Combines with hydrogen peroxide for the oxidation of secondary amines to nitrones. |
| Application: | Sodium tungstate dihydrate (Na2WO4.2H2O) may be employed in the following studies: • As a derivatization reagent for the determination of hydrogen peroxide by a fluorimetric method. • Synthesis of N-hydroxy-desferrioxamine B, a metabolite of the microbial product desferrioxamine B. • Preparation of highly crystalline CaMoO4, SrMoO4, CaWO4 and SrWO4 nanoparticles. |
| Application: | Sodium tungstate dihydrate may be used in the preparation of aqueous sols of tungsten oxide dihydrate. |
| General description: | Sodium tungstate dihydrate is a hydrated sodium salt of tungstic acid. It participates as a catalyst in the preparation of various epoxides. Various crystallographic properties of sodium tungstate dihydrate have been analyzed. |
| Packaging: | 5, 100, 500 g in poly bottle |
| Symbol |  GHS07 |
| Signal word | Warning |
| Hazard statements | H302 |
| Precautionary statements | P264 - P270 - P301 + P312 - P501 |
| Hazard Codes | Xn |
| Risk Statements | 22 |
| Safety Statements | 36 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥99% |
| mp | 698 °C (lit.) |
| UNSPSC | 12352300 |