C6H7NO6S2
253.3 g/mol
Dye & PigmentDanger
Aniline-2,4-disulfonic acid
CAS137-51-9EC205-299-3
Category
Dye & Pigment
Compound Class
Aromatic
Primary Use
intermediate for dyes and pigments
This compound is an aromatic amine disulfonic acid used primarily as an intermediate in the synthesis of dyes and pigments.
intermediate for dyes and pigments
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
ApplicationSame Use
2-amino-1,6-naphthalenedisulfonic acid
CAS6838-02-4
intermediate for dyes and pigments
ApplicationSame Use
2,4-dihydro-5-methyl-2-(4-methylphenyl)-3H-pyrazol-3-one
CAS86-92-0
intermediate for dyes and pigments
ApplicationSame Use
4-methyl-2-nitroaniline
CAS89-62-3
intermediate for dyes and pigments
ReferenceSame Category
N-(5-Chloro-2-methoxyphenyl)-3-hydroxynaphthalene-2-carboxamide
CAS137-52-0
Naphthol AS dye coupling component
ReferenceSame Category
N,N-Dimethyl-4-phenyl-d5-azoaniline
CAS1398109-08-4
Deuterated azo dye compound
ReferenceSame Category
1-(2-METHOXY-D3-PHENYLAZO)-2-NAPHTHOL
CAS1398109-09-5
Azo dye for coloration
ReferenceSame Category
Nickel(II) phthalocyanine
CAS14055-02-8
Blue pigment for inks and coatings
Safety Reference
Danger
H318Causes serious eye damage
H319Causes serious eye irritation
Customs Tariff Classification
The international HS code for Aniline-2,4-disulfonic acid (CAS 137-51-9) is 2921.42.
HS code (international, 6-digit)
2921.42
EU CN code (8-digit)
2921 42 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
4-aminobenzene-1,3-disulfonic acid
InChIKey
IMUUNYPYNWXUBO-UHFFFAOYSA-N
SMILES
C1=CC(=C(C=C1S(=O)(=O)O)S(=O)(=O)O)N
Synonyms (15)
- Aniline-2,4-disulfonic acid
- aniline-2,4-disulphonic acid
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