C7H9NO3S
187.22 g/mol
Dye & PigmentWarning
3-Amino-4-methylbenzenesulfonic acid
CAS618-03-1EC210-540-0
Category
Dye & Pigment
Compound Class
Amine
Primary Use
Dye intermediate
3-Amino-4-methylbenzenesulfonic acid is an organic compound used as a dye intermediate in the production of various colorants. It features an aromatic ring with an amino group, a methyl group, and a sulfonic acid group.
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.
Sourcing 3-Amino-4-methylbenzenesulfonic acid?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.
Related Compounds
ApplicationSame Use
4-Methyldiphenylamine
CAS620-84-8
Dye intermediate
ApplicationSame Use
2,4,6-trimethylaniline
CAS88-05-1
Dye intermediate
ApplicationSame Use
4-Amino-2,5-dichlorobenzenesulfonic acid
CAS88-50-6
Dye intermediate
ApplicationSame Use
N,N-diethyl-m-aminophenol
CAS91-68-9
Dye intermediate
ReferenceSame Category
4-nitroanthranilic acid
CAS619-17-0
dye intermediate
ReferenceSame Category
2-Methoxy-5-nitrobenzene-1-diazonium zinc chloride (2/1/4)
CAS61919-18-4
Dye intermediate for fast color salts
ReferenceSame Category
Acid Black 194
CAS61931-02-0
Acid dye for textiles
ReferenceSame Category
Reactive red 120
CAS61951-82-4
Reactive dye for textile coloration
Safety Reference
Warning
H319Causes serious eye irritation
Customs Tariff Classification
The international HS code for 3-Amino-4-methylbenzenesulfonic acid (CAS 618-03-1) 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
3-amino-4-methylbenzenesulfonic acid
InChIKey
DTNODBHGOLWROS-UHFFFAOYSA-N
SMILES
CC1=C(C=C(C=C1)S(=O)(=O)O)N
Synonyms (14)
- 4-Methylmetanilic acid
Sourcing 3-Amino-4-methylbenzenesulfonic acid?
Post a free purchase request — no account needed. It reaches suppliers of this product, and replies go straight to your inbox.