C10H7KO4S
262.33 g/mol
Dye & PigmentWarning
Potassium 6-hydroxynaphthalene-2-sulphonate
CAS833-66-9EC212-631-0
Category
Dye & Pigment
Compound Class
Aromatic
Primary Use
dye intermediate
Potassium 6-hydroxynaphthalene-2-sulphonate is a chemical compound used as a dye intermediate, primarily in the production of dyes and pigments. It features a naphthalene ring system with a sulfonate group and a hydroxyl group, and is supplied as a potassium salt.
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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Related Compounds
StrongSame Parent
2-naphthol-6-sulfonic acid sodium
CAS135-76-2
dye intermediate
SimilarStructure SimilarSimilarity 0.74
2,6-Naphthalenedisulfonic acid disodium salt
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Dye intermediate
ReferenceSame Category
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dye intermediate
ReferenceSame Category
Dichlorosulfophenyl-3-methylpyrazolone
CAS84-57-1
Dye intermediate
ReferenceSame Category
Anthraquinone
CAS84-65-1
chemical intermediate for dyes and pigments
ReferenceSame Category
2,2'-dimethylbenzidine
CAS84-67-3
intermediate for dye and pigment synthesis
Referencestereoisomer of
2-naphthol-6-sulfonic acid
CAS93-01-6
Azo dye intermediate
Safety Reference
Warning
H319Causes serious eye irritation
Customs Tariff Classification
The international HS code for Potassium 6-hydroxynaphthalene-2-sulphonate (CAS 833-66-9) 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
potassium 6-hydroxynaphthalene-2-sulfonate
InChIKey
PZWWSVPMGHDZNJ-UHFFFAOYSA-M
SMILES
C1=CC2=C(C=CC(=C2)S(=O)(=O)[O-])C=C1O.[K+]
Synonyms (12)
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