Nomenclature
CAS number: 7789-17-5
CsI; mol wt 259.81.
Cs 51.15%, I 48.85%.
Description and references
Prepn: Gmelins, Cesium (8th ed.) 25, pp 188-204 (1938). Toxicity study: Cochran et al., Arch. Ind. Hyg. 1, 637 (1950).
Properties
Deliquesc crystals or crystalline powder. d 4.5. mp 621°. bp about 1280°. Very sol in water; sol in ethanol;
slightly sol in methanol. Practically insol in acetone. Keep well closed. LD50 i.p. in rats: 1.4 g/kg (Cochran).Use
Prisms for infrared spectroscopy; in x-ray fluorescent
screens, scintillation counters.