Caesium perchlorate
| Caesium perchlorate[1][2] | |
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| IUPAC name Caesium perchlorate | |
| Other names Cesium perchlorate | |
| Identifiers | |
| CAS number | 13454-84-7  |
| PubChem | 3035378 |
| ChemSpider | 109912 |
| EC number | 236-643-0 |
| Jmol-3D images | {{#if:[Cs+].[O-]Cl(=O)(=O)=O|Image 1 |
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| Properties | |
| Molecular formula | CsClO4 |
| Molar mass | 232.36 g/mol |
| Appearance | Colorless crystalls |
| Density | 3.327 g/cm3 |
| Melting point | 250 °C; 482 °F; 523 K (decomposes) |
| Solubility in water | 1.974 g/100 ml (25 ºC) |
| Refractive index (nD) | 1.4887 |
| Structure | |
| Crystal structure | orthorhombic (<219 °C) cubic (>219 ºC, a = 798 pm) |
| Space group | Pnma (<219 °C) F43m (>219 ºC) |
| Lattice constant | a = 982 pm, b = 600 pm, c = 779 pm (orthorhombic, <219 °C) |
| Hazards | |
| MSDS | 's/cesiumperchlorate.pdf External MSDS |
| EU Index | not listed |
| Flash point | Non-flammable |
| Related compounds | |
| Other anions | Caesium chloride Caesium chlorate |
| Other cations | Lithium perchlorate Sodium perchlorate Potassium perchlorate Rubidium perchlorate |
(verify) (what is: / ?)Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa) | |
| 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. [3] This low solubility played an important role in the characterization of francium as an alkali metal, as francium perchlorate coprecipitates with caesium perchlorate.[4]
| Temperature (°C) | 0 | 8.5 | 14 | 25 | 40 | 50 | 60 | 70 | 99 |
|---|---|---|---|---|---|---|---|---|---|
| Solubility (g / 100 ml) | 0.8 | 0.91 | 1.91 | 1.974 | 3.694 | 5.47 | 7.30 | 9.79 | 28.57 |
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.
References
- ↑ 1.0 1.1 Perry, Dale L.; Phillips, Sidney L. (1995), Handbook of Inorganic Compounds, CRC Press.
- ↑ 2.0 2.1 Brezina, F.; Mollin, J.; Pastorek, R.; Sindelar, Z. (1986), Chemicke tabulky anorganickych sloucenin, SNTL.
- ↑ Greenwood, Norman N.; Earnshaw, Alan (1984). Chemistry of the Elements. Oxford: Pergamon Press. p. 1017. ISBN 0-08-022057-6..
- ↑ Hyde, E. K. (1952), "Radiochemical Methods for the Isolation of Element 87 (Francium)", J. Am. Chem. Soc. 74 (16): 4181–84, doi:10.1021/ja01136a066
External links
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