C6H8N2O3S
188.21 g/mol
Dye & PigmentDanger
2,5-Diaminobenzenesulfonic acid
CAS88-45-9EC201-832-9
Category
Dye & Pigment
Compound Class
Amine
Primary Use
Intermediate for azo dyes
2,5-Diaminobenzenesulfonic acid is a chemical compound primarily used as an intermediate in the production of azo dyes. It features an aromatic ring with two amine groups and a sulfonic acid group, contributing to its reactivity and water solubility.
Intermediate for azo dyes
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
1-Aminonaphthalene-6-sulfonic acid
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Intermediate for azo dyes
ApplicationSame Use
(E)-4,4'-dinitro-2,2'-stilbenesulfonic acid
CAS128-42-7
Intermediate for azo dyes
ApplicationSame Use
2-(4-Aminophenyl)-6-methyl-1,3-benzothiazole-7-sulfonic acid
CAS130-17-6
Intermediate for azo dyes
ReferenceSame Category
4-Amino-2,5-dichlorobenzenesulfonic acid
CAS88-50-6
Dye intermediate
ReferenceSame Category
3-amino-6-chlorotoluene-4-sulfonic acid
CAS88-53-9
Intermediate for paint and pigment
ReferenceSame Category
2,4-diaminobenzenesulfonic acid
CAS88-63-1
Dye intermediate for azo dyes
ReferenceSame Category
4-Acetamido-2-aminobenzenesulfonic acid
CAS88-64-2
dye intermediate
Safety Reference
Danger
H314Causes severe skin burns and eye damage
H318Causes serious eye damage
Customs Tariff Classification
The international HS code for 2,5-Diaminobenzenesulfonic acid (CAS 88-45-9) 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
2,5-diaminobenzenesulfonic acid
InChIKey
HEAHMJLHQCESBZ-UHFFFAOYSA-N
SMILES
C1=CC(=C(C=C1N)S(=O)(=O)O)N
Synonyms (15)
- 2-Sulfo-p-phenylenediamine
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