Sodium tungstate dihydrate
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Descriere
Descriere produs
| Item | Specifications |
|---|---|
| English Name | Sodium tungstate dihydrate |
| Număr CAS | 10213‑10‑2 |
| Formula moleculară | H₂Na₂O₅W |
| Greutate moleculară | 288.84 |
| EINECS Number | 600‑275‑2 |
| Melting Point | 698 °C (literature value) |
| Bulk Density | 1600 kg/m³ |
| Densitate | 4.18 g/cm³ |
| Specific Gravity | 3.25 |
| Storage Condition | Store at +15 °C to +25 °C |
| Solubility in Water | 1 M at 20 °C, clear and colorless solution |
| Physical Form | Solid |
| Culoare | White to slightly yellow |
| Odor | Odour-free |
| pH Value | 9.5–11.5 (1 M aqueous solution, 25 ℃) |
| pH Indicator Transition Range | 9–11.5 (100 g/L aqueous solution, 20 °C) |
| Water Solubility | 730 g/L at 20 ºC |
| UV‑Vis Maximum Wavelength & Absorbance | λ=260 nm, Amax ≤ 0.120 λ=280 nm, Amax ≤ 0.035 |
| Merck Index No. | 14, 8698 |
| Exposure Limits | ACGIH: TWA 3 mg/m³ NIOSH: TWA 1 mg/m³; STEL 3 mg/m³ |
| InChI | InChI=1S/2Na.2H2O.4O.W/h;;21H2;;;;;/q2+1;;;;;2*-1; |
| InChIKey | WPZFLQRLSGVIAA-UHFFFAOYSA-N |
| SMILES | O.O.[Na+].[Na+].[O-]W(=O)=O |
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