Caesium perchlorate

Caesium perchlorate[1][2]
Names
IUPAC name
Caesium perchlorate
Other names
Cesium perchlorate
Identifiers
13454-84-7 YesY
3D model (Jmol) Interactive image
ChemSpider 109912 YesY
ECHA InfoCard 100.033.298
EC Number 236-643-0
PubChem 3035378
Properties
CsClO4
Molar mass 232.36 g/mol
Appearance Colorless crystalls
Density 3.327 g/cm3
Melting point 250 °C (482 °F; 523 K) (decomposes)
1.974 g/100 ml (25 °C)
1.4887
Structure
orthorhombic (<219 °C)
cubic (>219 °C, a = 798 pm)
Pnma (<219 °C)
F43m (>219 °C)
a = 982 pm, b = 600 pm, c = 779 pm (orthorhombic, <219 °C)
Hazards
Safety data sheet External MSDS
Flash point Non-flammable
Related compounds
Other anions
 Caesium chloride
Caesium chlorate
Other cations
 Lithium perchlorate
Sodium perchlorate
Potassium perchlorate
Rubidium perchlorate
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. [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]

Table of solubility in water[1][2]
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. 1 2 Perry, Dale L.; Phillips, Sidney L. (1995), Handbook of Inorganic Compounds, CRC Press.
  2. 1 2 Brezina, F.; Mollin, J.; Pastorek, R.; Sindelar, Z. (1986), Chemicke tabulky anorganickych sloucenin, SNTL.
  3. ↑ Greenwood, Norman N.; Earnshaw, Alan (1984). Chemistry of the Elements. Oxford: Pergamon Press. p. 1017. ISBN 0-08-022057-6..
  4. ↑ 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
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