C10H8O4S
224.23 g/mol
Dye & PigmentDanger
2-Naphthol-6-sulfonic acid
CAS93-01-6EC202-209-4
Category
Dye & Pigment
Compound Class
Aromatic
Primary Use
Azo dye intermediate
2-Naphthol-6-sulfonic acid is an organic compound derived from naphthalene, featuring both a hydroxyl group and a sulfonic acid group. It is commonly used as an intermediate in the production of azo dyes.
azo dye intermediate
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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Antifogging agent in photographic developers
Safety Reference
Danger
H314Causes severe skin burns and eye damage
H315Causes skin irritation
H318Causes serious eye damage
H319Causes serious eye irritation
Customs Tariff Classification
The international HS code for 2-Naphthol-6-sulfonic acid (CAS 93-01-6) is 2908.99.
HS code (international, 6-digit)
2908.99
EU CN code (8-digit)
2908 99 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-hydroxynaphthalene-2-sulfonic acid
InChIKey
VVPHSMHEYVOVLH-UHFFFAOYSA-N
SMILES
C1=CC2=C(C=CC(=C2)S(=O)(=O)O)C=C1O
Synonyms (22)
- 2-Naphthol-6-sulfonic acid
- 2-Naphtol-6-sulfosaure
- Kyselina 2-naftol-6-sulfonova
- Kyselina schaferova
- Kyselina schaferova [Czech]
- SCHAFFER'S ACID
- Schaeffer's .beta.-acid
- Schaeffer's acid
- beta-Naphthol-6-sulfonic acid
- beta-Naphtholsulfonic acid S
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