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Home/Compounds/Dye & Pigment/8-amino-1,3,6-naphthalenetrisulfonic acid
C10H9NO9S3
383.4 g/mol
Dye & Pigment

1,3,6-Naphthalenetrisulfonic acid, 8-amino-

CAS117-42-0EC204-188-7
Category
Dye & Pigment
Compound Class
Organic Acid
Primary Use
Dye intermediate

This compound is an amino-substituted naphthalene trisulfonic acid used primarily as a dye intermediate in the manufacturing of industrial dyes.

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

ApplicationSame Use

2-Amino-4,8-naphthalenedisulfonic acid

CAS131-27-1

Dye intermediate

ApplicationSame Use

Disodium 3-hydroxynaphthalene-2,7-disulfonate

CAS135-51-3

Dye intermediate

ApplicationSame Use

2,6-Naphthalenedisulfonic acid disodium salt

CAS1655-45-4

Dye intermediate

ApplicationSame Use

4-Hydroxy-6-(3-sulphoanilino)naphthalene-2-sulphonic acid

CAS25251-42-7

Dye intermediate

ReferenceSame Category

8-Hydroxynaphthalene-1,6-disulfonic acid

CAS117-43-1

Dye intermediate for naphthol sulfonic acids

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

Customs Tariff Classification

The international HS code for 1,3,6-Naphthalenetrisulfonic acid, 8-amino- (CAS 117-42-0) is 2921.45.

HS code (international, 6-digit)

2921.45

EU CN code (8-digit)

2921 45 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-aminonaphthalene-1,3,6-trisulfonic acid

InChIKey

UBDHSURDYAETAL-UHFFFAOYSA-N

SMILES

C1=C2C=C(C=C(C2=C(C=C1S(=O)(=O)O)N)S(=O)(=O)O)S(=O)(=O)O

Synonyms (19)
  • 1,3,6-ANTS
  • 1-Naphthylamine,6,8-trisulfo-
  • Amino-H acid
  • Koch acid
  • Koch's acid
  • T Acid

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