Iodomethane CAS 74-88-4

Iodomethane CAS 74-88-4 Information

CAS	74-88-4
Molecular formula	CH3I
Molecular weight	141.94
EIENCS	200-819-5
Form	Liquid
Melting point	−64(lit.)
boling point	41-43 °C
Density	2.28 g/mL at 25 °C(lit.)
Solubility	water: soluble14g/L at 20°C
PKA	/
Color	Clear
Storage temp

What is Iodomethane CAS 74-88-4?

Chemical name: Methyl iodide (Alternative name: Methyl iodine)

Molecular formula: CH₃I

Molecular weight: 141.94 g/mol

CAS Number: 74-88-4

Appearance: Colorless and transparent liquid (decomposes to brown/purple upon exposure to light)

Solubility: Slightly soluble in water (1.4g /100mL, 20℃), miscible with ethanol and ether

Iodomethane CAS 74-88-4 Use

Methylation reagent (Main use)

Pharmaceutical synthesis: Production of iodomethylmethionine (vitamin U), analgesics, and antidotes.

Pesticide intermediates: Synthetic fungicides and herbicides (replacing methyl bromide).

industrial field

Soil disinfection: After the Montreal Convention banned methyl bromide, it has become an environmentally friendly alternative.

Microscopic examination: High refractive index characteristics are used for optical imaging.

Emerging technology

Fire extinguishing agent components: Efficiently block the combustion chain reaction.

Electronic cleaning agent: Removing organic residues in semiconductor manufacturing.

Iodomethane CAS 74-88-4 safety

Health risk:

Highly toxic: Oral LD₅₀=100-200 mg/kg in rats, inhalation causes pulmonary edema and central nervous system injury.

Carcinogenicity: Classified as a Group 3 carcinogen by IARC (insufficient evidence but caution is needed).

Protective measures:

Operation: Wear a gas mask and corrosion-resistant gloves, and work in a fume hood.

Leakage treatment: Sand and soil adsorption (water flushing is prohibited), and waste liquid should be disposed of as hazardous chemicals.

Storage requirements:

Seal the brown bottle, keep it in a cool and well-ventilated place (≤25℃), and keep it away from oxidants/alkalis.

Deshangchemical Info

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