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Home/Compounds/Dye & Pigment/8-Hydroxynaphthalene-1,6-disulfonic acid
C10H8O7S2
304.3 g/mol
Dye & Pigment

1-Naphthol-3,8-disulfonic acid

CAS117-43-1EC204-189-2
Category
Dye & Pigment
Compound Class
Aromatic
Primary Use
Dye intermediate for naphthol sulfonic acids

1-Naphthol-3,8-disulfonic acid is an organic compound that serves as a dye intermediate for naphthol sulfonic acids. It is also known as This compound and is characterized by its aromatic ring system with hydroxyl and sulfonic acid groups.

Dye intermediate for naphthol sulfonic acids

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

ReferenceSame Category

2,7-Naphthalenedisulfonic acid, 4-(benzoylamino)-5-hydroxy-

CAS117-46-4

dye intermediate

ReferenceSame Category

1-naphthol-4,8-disulfonic acid

CAS117-56-6

naphthol disulfonic acid intermediate for dyes

ReferenceSame Category

1-Naphthol-5-sulfonic acid

CAS117-59-9

Dye intermediate for azo dyes

ReferenceSame Category

Benzidine-2,2'-disulfonic acid

CAS117-61-3

Dye intermediate for azo dyes

Customs Tariff Classification

The international HS code for 1-Naphthol-3,8-disulfonic acid (CAS 117-43-1) 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

8-hydroxynaphthalene-1,6-disulfonic acid

InChIKey

XQAFHGXXHIZSGZ-UHFFFAOYSA-N

SMILES

C1=CC2=CC(=CC(=C2C(=C1)S(=O)(=O)O)O)S(=O)(=O)O

Synonyms (12)
  • 1-Naphthol, 3,8-disulfo-
  • 1-Naphthol,8-disulfo-
  • Andresen's Acid
  • Disulfo Acid E

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