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Caesium tungstate

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Caesium tungstate
Names
Other names Cesium tungstate, Cesium tungsten oxide
Identifiers
CAS Number
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.639 Edit this at Wikidata
EC Number
  • 237-019-0
PubChem CID
CompTox Dashboard (EPA)
InChI
  • InChI=1S/2Cs.4O.W/q2*+1;;;2*-1;Key: VPXSRGLTQINCRV-UHFFFAOYSA-N
SMILES
  • (=O)(=O)..
Properties
Chemical formula Cs2WO4
Molar mass 513.65 g/mol
Melting point >350 °C
Related compounds
Other cations Lithium tungstate
Sodium tungstate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references
Chemical compound

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 °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

  1. Cesium tungstate
Caesium compounds
Tungstate salts
H He
Li2WO4 Be B C N O F Ne
Na2WO4 Mg Al Si P S Cl Ar
K2WO4 CaWO4 Sc Ti V Cr MnWO4 FeWO4
Fe2(WO4)3
CoWO4 NiWO4 CuWO4 ZnWO4 Ga Ge As Se Br Kr
Rb Sr Y Zr(WO4)2 Nb Mo Tc Ru Rh Pd Ag2WO4 CdWO4 In2(WO4)3 Sn Sb Te I Xe
Cs2WO4 BaWO4 * Lu Hf Ta W Re Os Ir Pt Au Hg Tl PbWO4 Bi Po At Rn
Fr RaWO4 ** Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og
 
* La2(WO4)3 Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb
** Ac Th Pa UO2WO4 Np Pu Am Cm Bk Cf Es Fm Md No


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