67692

Iodomethane

purum, ≥99.0% (GC)

• Synonym(s): Methyl iodide
• Empirical Formula (Hill Notation): CH₃I
• CAS Number: 74-88-4
• Molecular Weight: 141.94
• Beilstein: 969135
• EC Number: 200-819-5
• MDL number: MFCD00001073
• UNSPSC Code: 12352100
• PubChem Substance ID: 329760660
• NACRES: NA.21

Properties

• vapor density: 4.89 (vs air)
• Quality Level: 200
• 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

Description

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.

Safety Information

• Pictograms: GHS02,GHS06,GHS08,GHS09
• Signal Word: Danger
• Hazard Statements: H226 - H301 + H331 - H312 - H315 - H319 - H335 - H351 - H410
• Precautionary Statements: P210 - P273 - P280 - P301 + P310 - P303 + P361 + P353 - P304 + P340 + P311
• 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