Iodine monochloride

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Iodine monochloride
Iodine monochloride
General
Systematic name	iodine(I) chloride
Other names	iodine chloride
Molecular formula	ICl
SMILES	ICl
Molar mass	162.35 g/mol
Appearance	red to brown liquid
CAS number	[7790-99-0]
Properties
Density and phase	? g/cm3, ?
Solubility in water	? g/100 ml (?°C)
27°C (300 K)
Boiling point	97.4°C (370.6 K)
Acidity (pKa)	?
Basicity (pKb)	?
Chiral rotation [α]D	?°
Viscosity	? cP at ?°C
Structure
Molecular shape	Linear
Crystal structure	?
Dipole moment	? D
Hazards
MSDS	External MSDS
Main hazards	?
NFPA 704
Flash point	?°C
R/S statement	R: ? S: ?
RTECS number	?
Supplementary data page
Structure and properties	n, εr, etc.
Thermodynamic data	Phase behaviour Solid, liquid, gas
Spectral data	UV, IR, NMR, MS
Related compounds
Related interhalogen compounds	Chlorine monofluoride, bromine monochloride, iodine monobromide
Except where noted otherwise, data are given for materials in their standard state (at 25°C, 100 kPa) Infobox disclaimer and references

Iodine monochloride (ICl), an interhalogen compound, is used as an iodinating agent. It is red to brown liquid at room temperature.

Preparation of iodine monochloride runs according to this equation:

I₂(s) + Cl₂(g) â†' 2ICl(l)

Iodine crystals are placed at the bottom of a capillary tube. Chlorine gas is passed through the iodine crystals. The initial reaction between the chlorine and iodine forms iodine monochloride. The brown vapor of iodine monochloride can be seen flowing from the capillary. Dark brown iodine monochloride liquid is collected at the bottom of the test tube. As more chlorine is added, the brown iodine monochloride forms crystals of yellow iodine trichloride.

Crystal Forms:
* α-ICl

* β-ICl

External links