C20H12N3NaO7S
461.4 g/mol
Dye & PigmentWarning
C.I. Acid Black 194
CAS61931-02-0EC612-717-1
Category
Dye & Pigment
Compound Class
Aromatic
Primary Use
Acid dye for textiles
C. I.
Dyeing of woolDyeing of silkDyeing of nylon
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
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Acid Violet 90
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Acid dye for textiles
ReferenceSame Category
Reactive red 120
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Reactive dye for textile coloration
ReferenceSame Category
C.I. Reactive Yellow 86
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Reactive dye for textiles
ReferenceSame Category
4-Methyldiphenylamine
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Dye intermediate
ReferenceSame Category
4-Amino-N,N-dimethylaniline sulfate
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Oxidation base for hair dyes
Safety Reference
Warning
H411Toxic to aquatic life with long lasting effects
H315Causes skin irritation
H319Causes serious eye irritation
H412Harmful to aquatic life with long lasting effects
Customs Tariff Classification
The international HS code for C.I. Acid Black 194 (CAS 61931-02-0) is 3204.12.
HS code (international, 6-digit)
3204.12
EU CN code (8-digit)
3204 12 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
sodium 3-hydroxy-4-[(2-hydroxynaphthalen-1-yl)diazenyl]-7-nitronaphthalene-1-sulfonate
InChIKey
DXRWYIKGBIPGAG-UHFFFAOYSA-M
SMILES
C1=CC=C2C(=C1)C=CC(=C2N=NC3=C4C=CC(=CC4=C(C=C3O)S(=O)(=O)[O-])[N+](=O)[O-])O.[Na+]
Synonyms (13)
- 1-naphthalene sulfonic acid
- Acid Chrome Black N
- Acid Chrome Black S
- C.I. Acid Black 194
- C.I. Mordant Black
- C.I. Mordant Black 1
- Chrome Black A
- Eriochrome Black A
- Solochrome Black AS
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