C6H8N2O3S
188.21 g/mol
Dye & PigmentWarning
2,4-Diaminobenzenesulfonic acid
CAS88-63-1EC201-846-5
Category
Dye & Pigment
Compound Class
Amine
Primary Use
Dye intermediate for azo dyes
2,4-Diaminobenzenesulfonic acid is a chemical compound primarily used as an intermediate in the production of azo dyes. It features two amine groups and a sulfonic acid group attached to an aromatic ring, contributing to its role in dye synthesis.
Intermediate for azo dye manufacturing
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
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Benzidine-2,2'-disulfonic acid
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4-(4-Aminoanilino)-3-nitrobenzenesulphonic acid
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Dye intermediate for azo dyes
ReferenceSame Category
4-Acetamido-2-aminobenzenesulfonic acid
CAS88-64-2
dye intermediate
ReferenceSame Category
O-nitroaniline
CAS88-74-4
Intermediate for azo dyes and pigments
ReferenceSame Category
4-Chloro-3-(3-methyl-5-oxo-2-pyrazolin-1-yl)benzenesulfonic acid
CAS88-76-6
Pyrazolone dye intermediate
ReferenceSame Category
Acid Blue 324
CAS88264-80-6
Acid dye for textiles
Safety Reference
Warning
H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
Customs Tariff Classification
The international HS code for 2,4-Diaminobenzenesulfonic acid (CAS 88-63-1) 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
2,4-diaminobenzenesulfonic acid
InChIKey
JVMSQRAXNZPDHF-UHFFFAOYSA-N
SMILES
C1=CC(=C(C=C1N)N)S(=O)(=O)O
Synonyms (19)
- o-Aminosulfanilic acid
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