C7H10N2
122.17 g/mol
Dye & PigmentDanger
2,5-Diaminotoluene
CAS95-70-5EC202-442-1
Category
Dye & Pigment
Compound Class
Amine
Primary Use
Hair dye intermediate
2,5-Diaminotoluene is an organic compound that appears as a colorless crystalline solid, though commercial samples may be colored due to air oxidation. It is primarily used as an intermediate in the formulation of hair dyes.
Hair dye intermediate
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.
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Related Compounds
StrongSame Parent
2,5-diaminotoluene sulfate
CAS615-50-9
Ingredient in hair dyes and fur dyes
ApplicationSame Use
4-nitro-o-phenylenediamine
CAS99-56-9
Hair dye intermediate
ReferenceSame Category
5-chloro-O-toluidine
CAS95-79-4
intermediate for organic dyestuffs
ReferenceSame Category
2,5-dichloroaniline
CAS95-82-9
Dye and pigment intermediate
ReferenceSame Category
2-amino-4-methylphenol
CAS95-84-1
intermediate for dyes and organic chemicals
ReferenceSame Category
4-chlororesorcinol
CAS95-88-5
Coupler in oxidative hair dyes
Safety Reference
Danger
H301Toxic if swallowed
H312Harmful in contact with skin
H317May cause an allergic skin reaction
H332Harmful if inhaled
H411Toxic to aquatic life with long lasting effects
H319Causes serious eye irritation
H373May cause damage to organs through prolonged or repeated exposure
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H316Causes mild skin irritation
H361Suspected of damaging fertility or the unborn child
H370Causes damage to organs
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for 2,5-Diaminotoluene (CAS 95-70-5) is 2921.51.
HS code (international, 6-digit)
2921.51
EU CN code (8-digit)
2921 51 19
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-methylbenzene-1,4-diamine
InChIKey
OBCSAIDCZQSFQH-UHFFFAOYSA-N
SMILES
CC1=C(C=CC(=C1)N)N
Synonyms (28)
- 1,4-Benzenediamine, 2-methyl-
- 1,4-diamino-2-methylbenzene
- 1-methyl-2,5-diaminobenzene
- 2,5-Diaminotoluene
- 2,5-Diaminotoluene (>80%)
- 2,5-Toluenediamine
- 2,5-diamino-1-methylbenzene
- 2,5-toluylenediamine
- 2-METHYL-1,4-BENZENEDIAMINE
- 2-Methyl-p-phenylenediamine
- 2-methyl-1,4-phenylenediamine
- 2-methylbenzene-1,4-diamine
- 4-Amino-2-methylaniline
- 4-Amino-3-methylaniline
- PARATOLUENEDIAMINE [MART.]
- Toluene-2,5-diamine
- Toluylene-2,5-diamine
- p,m-Tolylenediamine
- p-Toluenediamine
- p-Toluylendiamine
- p-toluylendiamin
- para-Toluenediamine
- para-Toluylenediamine
- para-Tolylenediamine
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