Ammonium paratungstate
- CAS NO.：11120-25-5
- Empirical Formula: H4NO42W12(-9)
- Molecular Weight: 2896.08
- MDL number: MFCD00011461
- EINECS: 234-364-9
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-07-12 17:58:41
What is Ammonium paratungstate?
Chemical properties
White crystals. Soluble in water; insoluble in alcohol.
The Uses of Ammonium paratungstate
manufacture of tungsten alloys.
The Uses of Ammonium paratungstate
Ammonium tungsten oxide hydrate is used in production of tungsten alloys. It is used, refluxing the ammonia solution is advisable to speed up the dissolution of the oxide.
Flammability and Explosibility
Not classified
Purification Methods
It crystallises from warm water on adding EtOH and cooling.
Properties of Ammonium paratungstate
| Melting point: | 3410 °C(lit.) |
| Boiling point: | 5660 °C(lit.) |
| Density | 2.3 g/mL at 25 °C(lit.) |
| vapor pressure | 0Pa at 25℃ |
| solubility | soluble in H2O; insoluble in ethanol |
| form | wire |
| color | White |
| Water Solubility | Soluble in water. Insoluble in alcohol |
| Merck | 13,567 |
| Exposure limits | ACGIH: TWA 3 mg/m3 NIOSH: TWA 1 mg/m3; STEL 3 mg/m3 |
| CAS DataBase Reference | 11120-25-5(CAS DataBase Reference) |
| EPA Substance Registry System | Tungstate (W12(OH)2O4010-), decaammonium (11120-25-5) |
Safety information for Ammonium paratungstate
Computed Descriptors for Ammonium paratungstate
| InChIKey | WFKWXMTUELFFGS-UHFFFAOYSA-N |
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