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Safety Information

8.06064

Sigma-Aldrich

Iodomethane

Synonym(s):

Iodomethane, Methyl iodide

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About This Item

Empirical Formula (Hill Notation):
CH3I
CAS Number:
Molecular Weight:
141.94
Beilstein:
969135
MDL number:
UNSPSC Code:
41116105
NACRES:
NA.22

vapor density

4.89 (vs air)

Quality Level

vapor pressure

24.09 psi ( 55 °C)
540 hPa ( 25 °C)
7.89 psi ( 20 °C)

Assay

≥99.0% (GC)

form

liquid

potency

79.84 mg/kg LD50, oral (rat)

expl. lim.

8.5-66 % (v/v)

refractive index

n20/D 1.531 (lit.)

pH

5.2 (25 °C in H2O)

bp

41-43 °C (lit.)
42 °C/1013 hPa

mp

-66 °C
−64 (lit.)

solubility

8.66 g/L

density

2.28 g/cm3 at 20 °C
2.28 g/mL at 25 °C (lit.)

SMILES string

CI

InChI

1S/CH3I/c1-2/h1H3

InChI key

INQOMBQAUSQDDS-UHFFFAOYSA-N

General description

stabilised with silver for synthesis

Application

Iodomethane (stabilised with silver) for synthesis. CAS 74-88-4, pH 5.2 (H₂O, 25 °C).

Storage and Stability

Store below +30°C.

Analysis Note

Assay (GC, area%):≥ 99.0 % (a/a)
Identity (IR):passes test

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

Regulatory Information

危险化学品

Certificates of Analysis (COA)

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