Sodium tungstate dihydrate
- Product NameSodium tungstate dihydrate
- CAS10213-10-2
- MFH2NaO5W-
- MW288.84
- EINECS600-275-2
- MOL File10213-10-2.mol
Chemical Properties
| Melting point | 698 °C(lit.) |
| bulk density | 1600kg/m3 |
| Density | 4.18 |
| storage temp. | Store at +15°C to +25°C. |
| solubility | H2O: 1 M at 20 °C, clear, colorless |
| form | Solid |
| Specific Gravity | 3.25 |
| color | White to slightly yellow |
| PH | 9.5-11.5 (25℃, 1M in H2O) |
| Odor | Odorless |
| PH Range | 9 - 11.5 at 100 g/l at 20 °C |
| Water Solubility | 730 g/L (20 ºC) |
| λmax | λ: 260 nm Amax: ≤0.120 λ: 280 nm Amax: ≤0.035 |
| Merck | 14,8698 |
| Exposure limits | ACGIH: TWA 3 mg/m3 NIOSH: TWA 1 mg/m3; STEL 3 mg/m3 |
| InChI | 1S/2Na.2H2O.4O.W/h;;2*1H2;;;;;/q2*+1;;;;;2*-1; |
| InChIKey | WPZFLQRLSGVIAA-UHFFFAOYSA-N |
| SMILES | O.O.[Na+].[Na+].[O-][W]([O-])(=O)=O |
Safety Information
| Hazard Codes | Xn |
| Risk Statements | 22-36/38-36 |
| Safety Statements | 36-37/39-26-39 |
| WGK Germany | 1 |
| RTECS | YO7900000 |
| TSCA | Yes |
| HS Code | 28418000 |
| Storage Class | 13 - Non Combustible Solids |
| Hazard Classifications | Acute Tox. 4 Oral |
| Toxicity | LD50 (mg tungstate/kg) in rabbits: 105 i.m.; in rats: 240 s.c. (Venugopal, Luckey) |
