Sodium Tungstate Dihydrate 99% AR
Reagent for determination of Uric acid.
Tungstic acid sodium salt dihydrate
Product Code. |
02537 |
Grade |
AR |
Purity |
99% |
CAS No. |
10213-10-2 |
Molecular Formula |
Na2WO4.2H2O |
Molecular Weight |
329.86 |
H.S.Code |
2841.80100 |
Shelf Life |
60 Months |
Physical Properties
| Physical state at 20 °C |
Solid |
Colour |
White crystalline |
Odour |
Odorless |
| pH value |
9 - 11.5 at 100 g/l at 20 °C |
Melting point/ Freezing point [°C] |
698 °C |
Density [g/cm3] |
4.18 |
| Solubility in water [% weight] |
730 g/L (20°C) |
Packaging
Specification
| Appearance | White Crystalline Powder |
| Assay | 99.0 - 101.0% |
| Insoluble matter | Max 0.01% |
| Free alkali (as NaOH) | Max 0.02 meq/gm |
| Chloride (Cl) | Max 0.005% |
| Sulphate (SO4) | Max 0.01% |
| Total nitrogen (N) | Max 0.001% |
| Heavy metals and iron (as Pb) | Max 0.001% |
| Molybdenum (Mo) | Max 0.001% |
| Arsenic (As) | Max 0.0005% |
Safety Information and Hazard Symbols
Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H302