Nomenclature
CAS number: 7790-99-0
Iodine chloride (ICl); Wijs' chloride.
ClI; mol wt 162.36.
Cl 21.84%, I 78.16%.
ICl.
Description and references
Prepd from the elements: Cornog, Karges, Inorg. Synth. 1, 165 (1939); Buckles,
Bader, ibid. 9, 130
(1967).
Properties
Black crystals or reddish-brown liquid. The crystals
occur in two modifications: α-form (stable), black needles (ruby
red by transmitted light), mp 27.2°; β-form (labile), black platelets (brownish red
by transmitted light), mp 13.9°. bp 97° (decompn). d429 3.10. Corrosive.
Sol in water, alc, ether, CS2, acetic acid. May be stored
in brown glass-stoppered bottles. Not hygroscopic, but forms I2O5 in the presence of air.Caution
Attacks the skin, forming dark,
painful patches (effective countermeasure: immediate washing with
20% HCl).Use
In Wijs' soln (iodine monochloride in glacial acetic
acid), used to determine iodine values of fats and oils.
Therapeutic Category
Anti-infective (topical).
Keywords
Antiseptic/Disinfectant; Halogens/Halogen Containing Compounds