C10H9NO4S
239.25 g/mol
Dye & PigmentDanger
6-AMINO-4-HYDROXY-2-NAPHTHALENESULFONIC ACID
CAS90-51-7EC202-000-8
Category
Dye & Pigment
Compound Class
Amine
Primary Use
Dye intermediate for azo dyes
6-Amino-4-hydroxy-2-naphthalenesulfonic acid is an organic compound used as an intermediate in the production of azo dyes. It features both amino and hydroxyl functional groups on a naphthalene ring system, contributing to its role in dye synthesis.
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
SimilarStructure SimilarSimilarity 0.76
1-hydroxy-6-amino-3-naphthalenesulfonic acid
CAS87-02-5
dye intermediate
SimilarStructure SimilarSimilarity 0.73
Amido-G-acid
CAS86-65-7
intermediate for azo dyes
ApplicationSame Use
M-nitroaniline
CAS99-09-2
Dye intermediate for azo dyes
ApplicationSame Use
4-(4-Aminoanilino)-3-nitrobenzenesulphonic acid
CAS135-11-5
Dye intermediate for azo dyes
ApplicationSame Use
2,4-diaminobenzenesulfonic acid
CAS88-63-1
Dye intermediate for azo dyes
ApplicationSame Use
2-naphthol-6,8-disulfonic acid
CAS118-32-1
Dye intermediate for azo dyes
ReferenceSame Category
Michler's ketone
CAS90-94-8
Intermediate for dyes and pigments
ReferenceSame Category
O-phthalodinitrile
CAS91-15-6
precursor to phthalocyanine pigments and dyes
Safety Reference
Danger
H314Causes severe skin burns and eye damage
Customs Tariff Classification
The international HS code for 6-AMINO-4-HYDROXY-2-NAPHTHALENESULFONIC ACID (CAS 90-51-7) is 2922.21.
HS code (international, 6-digit)
2922.21
EU CN code (8-digit)
2922 21 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
6-amino-4-hydroxynaphthalene-2-sulfonic acid
InChIKey
HBZVNWNSRNTWPS-UHFFFAOYSA-N
SMILES
C1=CC(=CC2=C(C=C(C=C21)S(=O)(=O)O)O)N
Synonyms (23)
- VWO
- 2-amino-6-sulfo-8-naphthol
- C.I. Developer 3
- G-Saure
- Gamma Acid
- Y acid
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