Methyl Iodide (lodomethane) (CAS 74-88-4)

Molecular structure

Chemical Product

METHYL IODIDE (lodomethane)

Cat. NoKC.1310160 CategorySalts Molecular FormulaCH3I CAS74-88-4 Molecular Weight141.939 g/mol

Pack sizes 100ML250ML

Safety & Hazards (GHS) Danger

Acute toxic

Health hazard

⚠️ For information only; not a substitute for the official Safety Data Sheet (SDS).

Methyl Iodide can cause cancer according to an independent committee of scientific and health experts.

Used as a methylating agent; used in microscopy because of its high refractive index; [ACGIH]
Methylating agent; in microscopy because of its high refractive index; as imbedding material for examining diatoms; in testing for pyridine. Light sensitive etching agent for electronic circuits; component in fire extinguishers.

Physical Description	Methyl iodide appears as a colorless liquid that turns brown on exposure to light. Denser than water. Contact may irritate skin, eyes and mucous membranes. Very toxic by ingestion, inhalation and s…
Color/Form	Colorless, transparent liquid (turns brown on exposure to light)
Odor	Pungent, ether-like odor.
Melting Point	-87.6 °F (NTP, 1992)
Boiling Point	108.3 °F at 760 mmHg (NTP, 1992)
Density	2.279 at 68 °F (USCG, 1999) - Denser than water; will sink
Solubility	10 to 50 mg/mL at 64 °F (NTP, 1992)
Vapor Pressure	661.76 mmHg (USCG, 1999)
Refractive Index	Index of refraction: 1.5293 @ 21 °C/D
Stability/Shelf Life	COLORLESS LIQUID THAT TURNS YELLOW, RED OR BROWN WHEN EXPOSED TO LIGHT & MOISTURE.

IUPAC Name	iodomethane
Molecular Formula	CH3I
Molecular Weight	141.939 g/mol
CAS	74-88-4
SMILES	CI
InChIKey	INQOMBQAUSQDDS-UHFFFAOYSA-N
Catalog No	KC.1310160
Pack sizes	100ML · 250ML

⚠️ For information only; not a substitute for the official SDS.