Caesium perchlorate
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| Names | |
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IUPAC name
Caesium perchlorate
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| Other names
Cesium perchlorate
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| Identifiers | |
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3D model (Jmol)
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| ChemSpider | |
| ECHA InfoCard | 100.033.298 |
| EC Number | 236-643-0 |
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PubChem CID
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| Properties | |
| CsClO4 | |
| Molar mass | 232.36 g/mol |
| Appearance | Colorless crystals |
| Density | 3.327 g/cm3 |
| Melting point | 250 °C (482 °F; 523 K) (decomposes) |
| 1.974 g/100 ml (25 °C) | |
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Refractive index (nD)
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1.4887 |
| Structure | |
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orthorhombic (<219 °C) cubic (>219 °C, a = 798 pm) |
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| Pnma (<219 °C) F43m (>219 °C) |
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a = 982 pm, b = 600 pm, c = 779 pm (orthorhombic, <219 °C)
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| Hazards | |
| Safety data sheet | External MSDS |
| Flash point | Non-flammable |
| Related compounds | |
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Other anions
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Caesium chloride Caesium chlorate |
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Other cations
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Lithium perchlorate Sodium perchlorate Potassium perchlorate Rubidium perchlorate |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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| Infobox references | |
Caesium perchlorate, CsClO4 (also known as cesium perchlorate), is a perchlorate of caesium. It forms white crystals, which are sparingly soluble in cold water and ethanol. It dissolves more easily in hot water.
CsClO4 is the least soluble of the alkali metal perchlorates (followed by Rb, K, Li, and Na), a property which may be used for separatory purposes and even for gravimetric analysis. This low solubility played an important role in the characterization of francium as an alkali metal, as francium perchlorate coprecipitates with caesium perchlorate.
When heated, CsClO4 decomposes to caesium chloride above 250 °C. Like all perchlorates, it is a strong oxidant and may react violently with reducing agents and organic materials, especially at elevated temperatures.
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