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67692

Sigma-Aldrich

Iodomethane

purum, ≥99.0% (GC)

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Synonym(s):
Methyl iodide
Empirical Formula (Hill Notation):
CH3I
CAS Number:
Molecular Weight:
141.94
Beilstein:
969135
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

vapor density

4.89 (vs air)

Quality Level

vapor pressure

24.09 psi ( 55 °C)
7.89 psi ( 20 °C)

grade

purum

Assay

≥99.0% (GC)

contains

silver wool as stabilizer

impurities

≤0.5% CH2I2

refractive index

n20/D 1.530
n20/D 1.531 (lit.)

bp

41-43 °C (lit.)
41-43 °C

mp

−64 (lit.)

solubility

water: soluble 14 g/L at 20 °C

density

2.28 g/mL at 25 °C (lit.)

SMILES string

CI

InChI

1S/CH3I/c1-2/h1H3

InChI key

INQOMBQAUSQDDS-UHFFFAOYSA-N

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1 of 4

This Item
289566IX0185PHR3504
Iodomethane purum, ≥99.0% (GC)

Sigma-Aldrich

67692

Iodomethane

Iodomethane contains copper as stabilizer, ReagentPlus®, 99.5%

Sigma-Aldrich

289566

Iodomethane

Iodomethane

Supelco

IX0185

Iodomethane

Iodomethane Pharmaceutical Secondary Standard; Certified Reference Material

Supelco

PHR3504

Iodomethane

refractive index

n20/D 1.530, n20/D 1.531 (lit.)

refractive index

n20/D 1.531 (lit.)

refractive index

-

refractive index

n20/D 1.531 (lit.)

bp

41-43 °C (lit.)

bp

41-43 °C (lit.)

bp

42 °C/1013 hPa

bp

41-43 °C (lit.)

mp

−64 (lit.)

mp

−64 (lit.)

mp

-66 °C

mp

−64 (lit.)

solubility

water: soluble 14 g/L at 20 °C

solubility

water: soluble 14 g/L at 20 °C

solubility

-

solubility

-

density

2.28 g/mL at 25 °C (lit.)

density

2.28 g/mL at 25 °C (lit.)

density

2.28 g/cm3 at 20 °C

density

2.28 g/mL at 25 °C (lit.)

General description

Iodomethane (Methyl iodide) is a colorless liquid. It can be prepared by reacting dimethyl sulfate with concentrated KI. Reaction of iodine and phosphorous with methanol has been reported to afford iodomethane. It reacts with tris(triphenylphosphine)chlororhodium(I) to afford the octahedral complex of rhodium(III), [RhlCl(CH3)(PPh3)2(ICH3)]. Kinetics of its reaction with atomic chlorine in the gas phase has been investigated. The absolute rate constant of the reaction has been reported.

Application

Iodomethane (Methyl iodide) may be employed in the preparation of stable neutral solutions of hypoiodous acid and various methyl esters.

Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Acute Tox. 4 Dermal - Aquatic Acute 1 - Aquatic Chronic 2 - Carc. 2 - Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

89.8 °F - closed cup

Flash Point(C)

32.1 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Interaction of tris (triphenylphosphine) chlororhodium (I) with iodomethane, methylallyl, and allyl chloride.
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J. Chem. Soc. Sect. A, 1733-1736 (1966)
Absolute reaction rate of chlorine atoms with iodomethane.
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