CH3Cl
50.49 g/mol
Industrial ChemicalDanger
Chloromethane
CAS74-87-3EC200-817-4
Category
Industrial Chemical
Compound Class
Halocarbon
Primary Use
Methylating agent in organic synthesis
Chloromethane, also known as methyl chloride, is a clear, colorless gas with a faint, sweet odor. It is extremely flammable and heavier than air, and it is primarily used as a methylating agent in organic synthesis.
Intermediate in the production of siliconesProduction of agricultural chemicals and methyl celluloseMethylating agent in organic synthesis
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
Relevant lists:California Proposition 65
CAS 74-87-3
Related Compounds
ReferenceSame Category
Methylamine
CAS74-89-5
Organic synthesis intermediate
ReferenceSame Category
Hydrogen cyanide
CAS74-90-8
chemical intermediate and fumigant
ReferenceSame Category
Methyl mercaptan
CAS74-93-1
odorant for natural gas
ReferenceSame Category
Dibromomethane
CAS74-95-3
solvent for fats, waxes, and resins
Safety Reference
Danger
H220Extremely flammable gas
H351Suspected of causing cancer
H373May cause damage to organs through prolonged or repeated exposure
H280Contains gas under pressure; may explode if heated
H361Suspected of damaging fertility or the unborn child
H332Harmful if inhaled
H336May cause drowsiness or dizziness
H341Suspected of causing genetic defects
H360May damage fertility or the unborn child
H370Causes damage to organs
H372Causes damage to organs through prolonged or repeated exposure
H302Harmful if swallowed
H340May cause genetic defects
H371May cause damage to organs
Customs Tariff Classification
The international HS code for Chloromethane (CAS 74-87-3) is 2903.11.
HS code (international, 6-digit)
2903.11
EU CN code (8-digit)
2903 11 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
chloromethane
InChIKey
NEHMKBQYUWJMIP-UHFFFAOYSA-N
SMILES
CCl
Synonyms (39)
- Norflurane EP Impurity W
- Artic
- Chloor-methaan
- Chloor-methaan [Dutch]
- Chlor-methan
- Chlor-methan [German]
- Chloride, Methyl
- Chloro Methyl group
- Chlorocarbon
- Chloromethane
- Chlorure de methyle
- Chlorure de methyle [French]
- Cl-Me
- Clorometano
- Clorometano [Italian]
- Cloruro di metile
- Cloruro di metile [Italian]
- Freon 40
- METHYL CHLORIDE
- METHYL CHLORIDE [MART.]
- Methane, chloro-
- Methylchlorid
- Methylchlorid [German]
- Metylu chlorek
- Metylu chlorek [Polish]
- Monochloromethane
- R 40
- Refrigerant R40
- carbon-chlorine
- methane chloride