Cesium molybdate

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Structural formula
Unit cell at room temperature
__ Cs + __ Mo 6+ __ O 2−
Crystal system

orthorhombic

Space group

Pmcn (No. 62, position 5)Template: room group / 62.5

General
Surname Cesium molybdate
other names
  • Cesium molybdate
  • Dicaesium molybdate
Molecular formula Cs 2 MoO 4
Brief description

white solid

External identifiers / databases
CAS number 13597-64-3
PubChem 22026375
ChemSpider 62863713
Wikidata Q64670775
properties
Molar mass 425.75 g mol −1
Physical state

firmly

Melting point

936 ° C

solubility

readily soluble in water (670 g l −1 at 18 ° C)

safety instructions
GHS labeling of hazardous substances
no GHS pictograms
H and P phrases H: no H-phrases
P: no P-phrases
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Cesium molybdate is an inorganic chemical compound from the group of molybdates .

Extraction and presentation

Cesium molybdate can be obtained by reacting cesium carbonate with molybdenum trioxide .

The compound is also formed in nuclear reactors from the reaction products of the reactor.

properties

Cesium molybdate is a white solid that is readily soluble in water. It has an orthorhombic crystal structure with the space group Pcmn (space group no. 62, position 4) . At higher temperatures there is a transition to a hexagonal crystal structure with the space group P 6 3 / mmc (space group no. 194) . Template: room group / 62.4 Template: room group / 194

use

Cesium molybdate can be used as an electrode material for surge arresters.

Individual evidence

  1. ↑ a b c d Dale L. Perry: Handbook of Inorganic Compounds . CRC Press, 1995, ISBN 978-0-8493-8671-8 , pp. 16 ( limited preview in Google Book search).
  2. ↑ a b espimetals: Cesium Molybdate , accessed on June 16, 2019
  3. ↑ Arnold P. Lattefer: Nuclear Waste Siting Research, Technology and Treatment . Nova Publishers, 2008, ISBN 978-1-60456-184-5 , pp. 19 ( limited preview in Google Book search).
  4. ↑ a b Gilles Wallez, Philippe E. Raison a. a .: High-temperature behavior of dicesium molybdate Cs2MoO4: Implications for fast neutron reactors. In: Journal of Solid State Chemistry. 215, 2014, p. 225, doi : 10.1016 / j.jssc.2014.04.003 .
  5. ↑ W. Gonschorek, Th. Hahn: The crystal structure of the cesium molybdate, Cs2MoO4. In: Journal of Crystallography - Crystalline Materials. 138, 1973, doi : 10.1524 / zkri.1973.138.jg.167 .
  6. ↑ Google Patents: DE19701816B4 - Gas-filled discharge section and surge arrester - Google Patents , accessed on June 16, 2019