2011. Cesium Chloride

Nomenclature

CAS number: 7647-17-8
ClCs; mol wt 168.36.
Cl 21.06%, Cs 78.94%.
CsCl.

Description and references

Prepn from carnallite and from pollucite: Donges in Handbook of Preparative Inorganic Chemistry vol. 1, G. Brauer, Ed. (Academic Press, New York, 2nd ed., 1963) pp 951, 955. Toxicity study: Cochran et al., Arch. Ind. Hyg. 1, 637 (1950).

Properties

Deliquesc cubic crystals. d 3.99. mp 646°. bp 1303°. Very sol in water; sol in alc. Keep well closed. LD50 i.p. in rats: 1.5 g/kg (Cochran).

Derivative

131CsCl.

Nomenclature

Cescan-131 (Abbott).

Use

In the final evacuation of radio and television vacuum tubes; in x-ray fluorescent screens; as radiographic contrast medium; in manuf of cesium.