Caesium sulfate
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| Names | |
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| Other names
Cesium sulfate
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| Identifiers | |
CAS Number
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3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.030.589 |
| EC Number |
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PubChem CID
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| UNII | |
CompTox Dashboard (EPA)
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InChI
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SMILES
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| Properties | |
Chemical formula
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Cs2SO4 |
| Molar mass | 361.87 g/mol |
| Density | 4.243 g/cm3, solid |
| Melting point | 1,010 °C (1,850 °F; 1,280 K) |
Solubility in water
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167 g/100 ml (0 °C) 179 g/100 ml (20 °C) |
| Solubility | insoluble in ethanol, acetone |
Magnetic susceptibility (χ)
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−116.0·10−6 cm3/mol |
| Hazards | |
| GHS labelling: | |
Pictograms
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Signal word
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Warning |
Hazard statements
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H302, H361, H412 |
Precautionary statements
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P201, P202, P264, P270, P273, P281, P301+P312, P308+P313, P330, P405, P501 |
| Flash point | Non-flammable |
| Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
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2830 mg/kg (oral, rat)[2] |
| Related compounds | |
Other anions
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Caesium hydrogen sulfate |
Other cations
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Lithium sulfate Sodium sulfate Potassium sulfate Rubidium sulfate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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Caesium sulfate, cesium sulfate, caesium sulphate or cesium sulphate is the inorganic compound and salt with the formula Cs2SO4. It is a white water-soluble solid that is used to prepare dense aqueous solutions for use in isopycnic centrifugation.[3] It is isostructural with potassium sulfate.[4]
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Coordination sphere of one of two types of Cs+ site in Cs2SO4. -
Environment of sulfate anion in β-Cs2SO4.
References
- ^ Weast, Robert C., ed. (1981). CRC Handbook of Chemistry and Physics (62nd ed.). Boca Raton, Florida: CRC Press. p. B-92. ISBN 0-8493-0462-8..
- ^ PubChem. "Cesium sulfate". pubchem.ncbi.nlm.nih.gov. Retrieved 2026-01-18.
- ^ Bonnet, F.; Périn, J. -P.; Jollès, P. (1980-05-29). "Proteoglycan complex and proteoglycan subunit polydispersity. Study by isopycnic centrifugation in cesium sulfate density gradients". Biochimica et Biophysica Acta (BBA) - Protein Structure. 623 (1): 57–68. doi:10.1016/0005-2795(80)90007-0. ISSN 0005-2795.
- ^ Nord, A.G. "The crystal structure of cesium sulfate, beta-Cs2SO4" Acta Chemica Scandinavica, Series A: 1976, 30, p198.



