Cesium sulfate

Structural formula
Crystal system	orthorhombic
Space group	Pmcn (No. 62, position 5)
General
Surname	Cesium sulfate
other names	Dicesium sulfate
Molecular formula	Cs 2 SO 4
Brief description	white solid
External identifiers / databases
CAS number 10294-54-9 EC number 233-662-6 ECHA InfoCard 100.030.589 PubChem 25137 Wikidata Q331260
properties
Molar mass	361.87 g mol −1
Physical state	firmly
density	4.243 g cm −3 (25 ° C)
Melting point	1019 ° C
solubility	soluble in water (723 g l −1 at 20 ° C) insoluble in organic solvents
safety instructions
GHS labeling of hazardous substances Caution H and P phrases H: 302-361f-373 P: 201-264-280-301 + 330 + 331-312
Toxicological data	2830 mg kg −1 ( LD 50 ,  rat ,  oral )
Thermodynamic properties
ΔH f 0	−1443.0 kJ / mol
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

1. ↑ ^{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 ).
2. ↑ ^{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).
3. ↑ ^{a b} Entry on cesium sulfate in the GESTIS substance database of the IFA , accessed on January 8, 2020(JavaScript required) .
4. ↑ 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.
5. ↑ Jane E. Macintyre: Dictionary of Inorganic Compounds . CRC Press, 1992, ISBN 0-412-30120-2 , pp. 3097 ( limited preview in Google Book Search).
6. ↑ 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).
7. ^ 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).