Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
o-Toluidine is an organic compound and one of the three isomeric toluidines. It is a colorless liquid that is primarily used in the manufacture of dyes and herbicides.
Manufacture of dyesProduction of herbicides
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.
Safety Reference
Toxic
Harmful
Health Hazard
Environmental Hazard
Danger
H301Toxic if swallowed
H319
Customs Tariff Classification
The international HS code for O-Toluidine (CAS 95-53-4) is 2921.43.
HS code (international, 6-digit)
2921.43
EU CN code (8-digit)
2921 43 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
2-methylaniline
InChIKey
RNVCVTLRINQCPJ-UHFFFAOYSA-N
SMILES
CC1=CC=CC=C1N
Synonyms (47)
Prilocaine EP impurity B
1-Amino-2-methylbenzene
1-Methyl-2-aminobenzene
2-AMINOTOLUENE
2-Amino-1-methylbenzene
2-Aminotoluene (o-toluidine)
2-Methyl-1-aminobenzene
2-Methylaniline
2-Methylbenzamine
2-Methylbenzenamine
2-Toluidine
2-Toluidine-d7
2-methylphenylamine
2-tolylamine
Aniline, 2-methyl-
Benzenamine, 2-methyl-
Benzenamine, methyl-
O-TOLUIDINE(1%)
O-Toluidine (ACD/Name 4.0)
O-Toluidine-d3(methyl-d3)
PRILOCAINE IMPURITY B
Prilocaine Impurity 31
o-Aminotoluene
o-Methylaniline
o-Methylbenzenamine
o-Toluide
o-Toluidin
o-Toluidin [Czech]
o-Toluidine
o-Toluidine, liquid
o-Toluidine, liquid or solid
o-Toluidine, p.a.
o-Toluidyna
o-Toluidyna [Polish]
o-Tolylamine
ortho-toluidine
ortho-tolylamine
Causes serious eye irritation
H331Toxic if inhaled
H350May cause cancer
H400Very toxic to aquatic life
H312Harmful in contact with skin
H315Causes skin irritation
H341Suspected of causing genetic defects
H411Toxic to aquatic life with long lasting effects
H227
H302Harmful if swallowed
H332Harmful if inhaled
H336May cause drowsiness or dizziness
H370Causes damage to organs
H372Causes damage to organs through prolonged or repeated exposure
H410Very toxic to aquatic life with long lasting effects
H313May be harmful in contact with skin
H316Causes mild skin irritation
H340May cause genetic defects
H373May cause damage to organs through prolonged or repeated exposure
