Caesium tungstate

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Caesium tungstate

Names
Other names Cesium tungstate, Cesium tungsten oxide
Identifiers
CAS Number	13587-19-4
ECHA InfoCard	100.033.639
PubChem CID	22269592
CompTox Dashboard (EPA)	DTXSID50890877
Properties
Chemical formula	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 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[]

Caesium tungstate forms colorless crystals, which are strongly hygroscopic. A phase transition from orthorhombic to hexagonal crystal system occurs at 536 ℃.

Preparation[]

Caesium tungstate can be obtained by the reaction between caesium chloride (CsCl) and (Ag₂WO₄) or the reaction between tungstic acid and caesium hydroxide.

Hazards[]

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Caesium tungstate has acute toxicity and it may cause irritation. It may cause inflammation upon contact with skin and eyes.

References[]

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