67692

Sigma-Aldrich

Iodomethane

purum, ≥99.0% (GC)

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

Quality Level

vapor density

4.89 (vs air)

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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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

hazcat

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 Germany

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

Certificate of Analysis

Certificate of Origin

Farabi Temel
Talanta, 211, 120725-120725 (2020-02-20)
This work designs the synthesis of a novel amino morpholine schiff base functionalized calix[4]arene cage (SCC), its deposition onto Quartz Crystal Microbalance (QCM) crystal surface, and usage for the selective detecting of formaldehyde (HCHO). The SCC modified QCM sensor has...
Interaction of tris (triphenylphosphine) chlororhodium (I) with iodomethane, methylallyl, and allyl chloride.
Lawson DN, et al.
J. Chem. Soc. Sect. A, 1733-1736 (1966)
Efficient methylation of carboxylic acids with potassium hydroxide/methyl sulfoxide and iodomethane.
Avila-Zarraga JG and Martinez R.
Synthetic Communications, 31(14), 2177-2183 (2001)
Iodomethane oxidation by dimethyldioxirane: a new route to hypoiodous acid and iodohydrines.
Asensio G, et al.
Organic Letters, 1(13), 2125-2128 (1999)
Absolute reaction rate of chlorine atoms with iodomethane.
Kambanis KG, et al.
Chemical Physics Letters, 268(5), 498-504 (1997)
Protocols
US EPA Method 8260: GC Analysis of Volatiles on SPB®-624 after Purge & Trap using "K" Trap, Fast GC Analysis
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