Iodine Trichloride
Title: Iodine Trichloride
CAS Registry Number: 865-44-1
Molecular Formula: Cl3I
Molecular Weight: 233.26
Percent Composition: Cl 45.60%, I 54.40%
Line Formula: ICl3
Literature References: Prepd by adding finely powdered iodine to an excess of liq chlorine, which is then boiled away: Thomas, Depuis, Compt. Rend. 143, 282 (1906); Booth, Morris, Inorg. Synth. 1, 167 (1939). Alternate process: Birk, Angew. Chem. 41, 751 (1928); Z. Anorg. Allg. Chem. 172, 399 (1928); Wilke-Dörfurt, Wolff, ibid. 185, 333 (1930).
Properties: Long yellow or brownish needles or fluffy powder. Pungent, irritating odor. Corrosive to human skin. Must be stored in well closed amber glass bottles, preferably in refrigerator. d-4 3.203. mp ~33°. Volatile at room temp. mp 101° at 16 atm (pressure of its satd vapor). A pressure of 1 atm is reached at 64°. Complete decompn into ICl and Cl2 at 77°. Generally used as a 20 to 35% soln in concd HCl.
Melting point: mp ~33°; mp 101° at 16 atm (pressure of its satd vapor)
Density: d-4 3.203
CAUTION: Concd solns are strongly irritating.
Use: Chlorinating and oxidizing agent.
Therap-Cat: Anti-infective (topical).
Keywords: Antiseptic/Disinfectant; Halogens/Halogen Containing Compounds.

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