Cesium sulfate
Structural formula | ||||||||||||||||
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Crystal system |
orthorhombic |
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Space group |
Pmcn (No. 62, position 5) |
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General | ||||||||||||||||
Surname | Cesium sulfate | |||||||||||||||
other names |
Dicesium sulfate |
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Molecular formula | Cs 2 SO 4 | |||||||||||||||
Brief description |
white solid |
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External identifiers / databases | ||||||||||||||||
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properties | ||||||||||||||||
Molar mass | 361.87 g mol −1 | |||||||||||||||
Physical state |
firmly |
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density |
4.243 g cm −3 (25 ° C) |
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Melting point |
1019 ° C |
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solubility |
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safety instructions | ||||||||||||||||
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Toxicological data | ||||||||||||||||
Thermodynamic properties | ||||||||||||||||
ΔH f 0 |
−1443.0 kJ / mol |
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As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Cesium sulfate is an inorganic chemical compound of the cesium from the group of sulfates .
Extraction and presentation
Cesium sulfate can be obtained by reacting cesium carbonate or cesium chloride with sulfuric acid or cesium hydrosulfate .
It is also formed when pollucite is broken down with sulfuric acid.
properties
Cesium sulfate is a white solid that is soluble in water. It has an orthorhombic crystal structure with the space group Pmcn (space group no. 62, position 5) . At 667 ° C, the compound changes into a high-temperature form, which has a trigonal crystal structure with the space group P 3 m 1 (No. 156) .
use
Cesium sulfate is used to produce density gradients in ultracentrifuge separation .
Individual evidence
- ↑ a b c d e f g data sheet Cesium sulfate, 99.99% trace metals basis from Sigma-Aldrich , accessed on January 21, 2014 ( PDF ).
- ↑ a b G. WA Milne: Gardner's Commercially Important Chemicals: Synonyms, Trade Names, and ... John Wiley & Sons, 2005, ISBN 0-471-73661-9 , pp. 123 ( limited preview in Google Book search).
- ↑ a b Entry on cesium sulfate in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .
- ↑ David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Standard Thermodynamic Properties of Chemical Substances, pp. 5-10.
- ↑ Jane E. Macintyre: Dictionary of Inorganic Compounds . CRC Press, 1992, ISBN 0-412-30120-2 , pp. 3097 ( limited preview in Google Book Search).
- ↑ by Martin Bertau, Armin Müller, Peter Fröhlich, Michael Katzberg, Karl Heinz Büchel, Hans-Heinrich Moretto, Dietmar Werner: Industrial Inorganic Chemistry - Martin Bertau, Armin Müller, Peter Fröhlich, Michael Katzberg, Karl Heinz Büchel, Hans-Heinrich Moretto , Dietmar Werner . John Wiley & Sons, 2013, ISBN 978-3-527-64958-7 , pp. 3.1.1.5.5 . ( limited preview in Google Book search).
- ^ Jean d'Ans, Ellen Lax, Roger Blachnik: Pocket book for chemists and physicists . Springer DE, 1998, ISBN 3-642-58842-5 , pp. 418 ( limited preview in Google Book search).