C6H6ClNO4S
223.63 g/mol
Dye & PigmentWarning
3-Amino-5-chloro-2-hydroxybenzenesulfonic acid
CAS88-23-3EC201-813-5
Category
Dye & Pigment
Compound Class
Aromatic
Primary Use
Dye intermediate for azo dyes
3-Amino-5-chloro-2-hydroxybenzenesulfonic acid is an off-white solid used as a dye intermediate, particularly for azo dyes.
dye 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
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ReferenceSame Category
5-amino-2-chlorobenzenesulfonic acid
CAS88-43-7
Intermediate for pigment red 58
ReferenceSame Category
2-amino-5-methylbenzenesulfonic acid
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Pigment intermediate
ReferenceSame Category
2,5-diaminobenzenesulfonic acid
CAS88-45-9
Intermediate for azo dyes
ReferenceSame Category
4-Amino-2,5-dichlorobenzenesulfonic acid
CAS88-50-6
Dye intermediate
Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
Customs Tariff Classification
The international HS code for 3-Amino-5-chloro-2-hydroxybenzenesulfonic acid (CAS 88-23-3) is 2922.29.
HS code (international, 6-digit)
2922.29
EU CN code (8-digit)
2922 29 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-5-chloro-2-hydroxybenzenesulfonic acid
InChIKey
YCTAOQGPWNTYJE-UHFFFAOYSA-N
SMILES
C1=C(C=C(C(=C1N)O)S(=O)(=O)O)Cl
Synonyms (17)
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