Chemistry:Caesium tungstate
From HandWiki
| Names | |
|---|---|
Other names
| |
| Identifiers | |
3D model (JSmol)
|
|
| ChemSpider | |
| EC Number |
|
PubChem CID
|
|
| |
| |
| Properties | |
| Cs2WO4 | |
| Molar mass | 513.65 g/mol |
| Melting point | >350 °C[1] |
| Related compounds | |
Other cations
|
Lithium tungstate Sodium tungstate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Caesium tungstate or cesium tungstate is an inorganic chemical compound with the formula Cs
2WO
4.[2] It is notable for forming a very dense liquid in solution (a solution containing 85.6g Cs
2WO
4 per 100g water has a specific gravity of 3.0133).[3] The solution is used in diamond processing, since diamond sinks in it, whereas most other rocks float.[4]
Properties
Caesium tungstate forms colorless crystals, which are strongly hygroscopic. A phase transition from orthorhombic to hexagonal crystal system occurs at 536 °C.
Preparation
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
- ↑ Cesium tungstate
- ↑ Perry, Dale L. (2011). Handbook of inorganic compounds (2nd ed.). Boca Raton: CRC Press. ISBN 978-1-4398-1461-1.
- ↑ , Tom L.; Kathy Bauer & Michael G. Greene et al."Heavy caesium salt containing liquids for use in separation processes" patent WO2000036165A2, issued 2000-06-22
- ↑ , Francois"High Temperature Chemical Process For The Preparation Of Cesium Tungstate" patent US20230114534A1, issued 2023-04-13
 |  |
