C2H3NO
57.05 g/mol
AgrochemicalDanger
METHYL ISOCYANATE
CAS624-83-9EC210-866-3
Category
Agrochemical
Compound Class
Other
Primary Use
chemical intermediate for carbamate pesticides
Methyl isocyanate is an organic compound with the molecular formula CH3NCO. It is primarily used as a chemical intermediate in the production of carbamate pesticides, including carbaryl, carbofuran, methomyl, and aldicarb.
intermediate for carbamate pesticide productionchemical intermediate in Hofmann rearrangement of acetamide
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 624-83-9
Related Compounds
ReferenceSame Category
2,6-Dichloropyridin-3-amine
CAS62476-56-6
chloropyridine agrochemical intermediate
ReferenceSame Category
3,5-dichloroaniline
CAS626-43-7
Intermediate for fungicides production
ReferenceSame Category
Carbaril
CAS63-25-2
insecticide for agricultural and home use
ReferenceSame Category
3-Bromo-5-nitrobenzotrifluoride
CAS630125-49-4
herbicide intermediate
Related Reading
Safety Reference
Danger
H225Highly flammable liquid and vapour
H301Toxic if swallowed
H311Toxic in contact with skin
H315Causes skin irritation
H317May cause an allergic skin reaction
H318Causes serious eye damage
H330Fatal if inhaled
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled
H335May cause respiratory irritation
H361Suspected of damaging fertility or the unborn child
H341Suspected of causing genetic defects
H360May damage fertility or the unborn child
H370Causes damage to organs
H310Fatal in contact with skin
H314Causes severe skin burns and eye damage
H372Causes damage to organs through prolonged or repeated exposure
Customs Tariff Classification
The international HS code for METHYL ISOCYANATE (CAS 624-83-9) is 2929.10.
HS code (international, 6-digit)
2929.10
EU CN code (8-digit)
2929 10 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
methylimino(oxo)methane
InChIKey
HAMGRBXTJNITHG-UHFFFAOYSA-N
SMILES
CN=C=O
Synonyms (26)
- MP-NCO
- Isocyanate de methyle
- Isocyanate, methyl-
- Isocyanatomethane
- Isocyanic acid, methyl ester
- METHYL ISOCYANATE
- MIC [Isocyanate]
- MeNCO
- Methane, isocyanato-
- Methyl carbonimide
- Methyl isocyanat
- Methyl isocyanat [German]
- Methyl isocynate
- Methylcarbylamine
- Methylisocyanaat
- Methylisocyanaat [Dutch]
- Methylisokyanat
- Methylisokyanat [Czech]
- Metil isocianato
- Metil isocianato [Italian]
- methane, (methylimino)oxo-
- methylimino-oxomethane