Caesium tungstate
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| Names | |
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| Other names
Cesium tungstate, Cesium tungsten oxide
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| Identifiers | |
| ECHA InfoCard | 100.033.639 |
PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| Cs2WO4 | |
| Molar mass | 513.65 g/mol |
| Melting point | >350 °C[1] |
| Related compounds | |
Other cations
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Lithium tungstate Sodium tungstate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Caesium tungstate or cesium tungstate is an inorganic chemical compound that is notable for forming a very dense liquid in solution. The solution is used in diamond processing, since diamond sinks in it, whereas most other rocks float.
Properties
[edit]Caesium tungstate forms colorless crystals, which are strongly hygroscopic. A phase transition from orthorhombic to hexagonal crystal system occurs at 536 °C.
Preparation
[edit]Caesium tungstate can be obtained by the reaction between caesium chloride (CsCl) and silver tungstate (Ag2WO4) or the reaction between tungstic acid and caesium hydroxide.
References
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