Ammonium tetrathiotungstate
From Wikipedia, the free encyclopedia
| Names | |
|---|---|
| IUPAC name
azane;bis(sulfanylidene)tungsten;sulfanide | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.156.973 |
| EC Number |
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PubChem CID |
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| Properties | |
| (NH4)2WS4 | |
| Molar mass | 348.16 g·mol−1 |
| Appearance | yellow to orange crystals |
| Density | 2.71 g/cm3 (hydrate) |
| soluble | |
| Hazards | |
| GHS labelling:[1] | |
 | |
| Warning | |
| H315, H319, H335 | |
| P264, P280, P302+P352, P321, P332+P313, P362[2] | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Ammonium tetrathiotungstate is a chemical compound with the chemical formula (NH4)2WS4.[3][4]
Ammonium tetrathiotungstate can be obtained by the reaction of tungstic acid, ammonia, and hydrogen sulfide in a water bath at 65-70°C:[5]
- H2WO4 + 2NH3·H2O + 4H2S → (NH4)2WS4 + 6H2O