methylene iodide

Also known as diiodomethane

Diiodomethane or methylene iodide, commonly abbreviated "MI", is an organoiodine compound. Diiodomethane is a very dense colorless liquid; however, it decomposes upon exposure to light liberating iodine, which colours samples brownish. It is slightly soluble in water, but soluble in organic solvents. It has a very high refractive index of 1.741, and a surface tension of 0.0508 N·m−1.

In the Vinony graph

Vinony's link graph records 113 inbound references to methylene iodide, and connects out to methyl iodide, phosphorus and iodine.

It is catalogued under topics including Chembox having GHS data, Chembox image size set and ECHA InfoCard ID from Wikidata.

Vinony links it to 20 Wikipedia language editions.

Chemical data

Formula: CH2I2
Molecular weight: 267.835 g/mol
IUPAC name: diiodomethane
SMILES: C(I)I
InChIKey: NZZFYRREKKOMAT-UHFFFAOYSA-N
XLogP: 2.3
Polar surface area: 0 Å²
H-bond donors: 0
H-bond acceptors: 0
Formal charge: 0

via PubChem

Wikidata facts

Mass: 267.825

Show 8 more facts

chemical formula: CH₂I₂
canonical SMILES: C(I)I
Commons category: Diiodomethane
melting point: 6.1
density: 3.28
ionization energy: 9.46
boiling point: 182
standard enthalpy of formation: 68.50

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Encyclopedic overview

5 sections

Contents

Uses
Preparation
Safety
References
External links

==Uses== Because of its high density, diiodomethane is used in the determination of the density of mineral and other solid samples. It can also be used as an optical contact liquid, in conjunction with the gemmological refractometer, for determining the refractive index of certain gemstones.

Excerpted from Wikipedia’s “methylene iodide” article, available under the CC BY-SA 4.0 licence.