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3D model (JSmol) | |
| ChemSpider | |
| ECHA InfoCard | 100.033.639 |
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| Properties | |
| Cs2WO4 | |
| Molar mass | 513.65 g/mol |
| Melting point | >350 °C[1] |
| Related compounds | |
Othercations | Lithium tungstate Sodium tungstate |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Caesium tungstate orcesium tungstate is an inorganicchemical compound with the formulaCs2WO4.[2] It is notable for forming a very dense liquid in solution (a solution containing 85.6gCs2WO4 per 100g water has aspecific gravity of 3.0133).[3] The solution is used in diamond processing, since diamond sinks in it, whereas most other rocks float.[4]
Caesium tungstate forms colorlesscrystals, which are stronglyhygroscopic. Aphase transition from orthorhombic to hexagonal crystal system occurs at 536 °C.
Caesium tungstate can be obtained by the reaction betweencaesium chloride (CsCl) andsilver tungstate (Ag2WO4) or the reaction betweentungstic acid andcaesium hydroxide.
