Caesium tungstate

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.

Caesium tungstate
Names
Other names
Cesium tungstate, Cesium tungsten oxide
Identifiers
ECHA InfoCard 100.033.639
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

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

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.