Merck
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158429

Sigma-Aldrich

Diiodomethane

ReagentPlus®, 99%, contains copper as stabilizer

Synonym(s):
Methylene iodide
Empirical Formula (Hill Notation):
CH2I2
CAS Number:
Molecular Weight:
267.84
Beilstein:
1696892
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

vapor density

9.25 (vs air)

Quality Level

product line

ReagentPlus®

assay

99%

form

liquid

contains

copper as stabilizer

bp

67-69 °C/11 mmHg (lit.)

mp

5-8 °C (lit.)

density

3.325 g/mL at 25 °C (lit.)

SMILES string

ICI

InChI

1S/CH2I2/c2-1-3/h1H2

InChI key

NZZFYRREKKOMAT-UHFFFAOYSA-N

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General description

Diiodomethane (CH2I2) is an iodine containing organic compound. Its decomposition in acetonitrile initiated by 310nm light has been investigated. Femtosecond pump-probe spectroscopic and ab initio molecular dynamics simulations studies of the photodecomposition of CH2I2 suggest the formation of the isomer of diiodomethane (CH2I-I) as hot photoproduct. In the atmosphere, it undergoes photolysis in the presence of ozone to afford iodine oxide (IO) which results in the formation of aerosols. Its vacuum ultraviolet (VUV) photoabsorption spectrum has been reported.

Application

Diiodomethane has been used as a probe liquid for evaluation of the polar and dispersive components of the surface energy of the catecholamine coated fiber surfaces. It may be used for the preparation of cyclopropyl ketones, esters and amides.
Diiodomethane may be used as a probe solvent in contact angle measurement to analyze the hydrophilicity of polymer surfaces.

Packaging

25, 100, 500 g in glass bottle

Legal Information

ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC

Pictograms

Skull and crossbones

Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Oral - Acute Tox. 4 Inhalation - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

230.0 °F - closed cup

Flash Point(C)

110 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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