C34H24N9Na3O11S3
899.8 g/mol
Dye & Pigment
Direct Black 168
CAS85631-88-5
Category
Dye & Pigment
Compound Class
Amine
Primary Use
direct dye for textiles
Direct Black 168 is an anionic azo dye commonly used for direct dyeing of textiles, particularly cellulosic fibers. It features a complex aromatic structure with multiple sulfonate groups and azo linkages, contributing to its affinity for fiber substrates.
direct dye for textiles
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
Direct Black 38
CAS1937-37-7
direct dye for textiles
ApplicationSame Use
Direct Red 227
CAS12222-51-4
direct dye for textiles
ApplicationSame Use
Direct red 81
CAS2610-11-9
direct dye for textiles
ApplicationSame Use
Direct yellow 50
CAS3214-47-9
direct dye for textiles
ReferenceSame Category
Cobaltate(3-), bis[2-(hydroxy-.kappa.O)-5-nitro-3-[[2-(oxo-.kappa.O)-1-[(phenylamino)carbonyl]propyl]azo-.kappa.N1]benzenesulfonato(3-)]-, trisodium
CAS85959-73-5
acid dye for textile coloring
ReferenceSame Category
Amido-G-acid
CAS86-65-7
intermediate for azo dyes
ReferenceSame Category
2,4-dihydro-5-methyl-2-(4-methylphenyl)-3H-pyrazol-3-one
CAS86-92-0
intermediate for dyes and pigments
ReferenceSame Category
1-hydroxy-6-amino-3-naphthalenesulfonic acid
CAS87-02-5
dye intermediate
Safety Reference
H412Harmful to aquatic life with long lasting effects
Customs Tariff Classification
The international HS code for Direct Black 168 (CAS 85631-88-5) is 3204.14.
HS code (international, 6-digit)
3204.14
EU CN code (8-digit)
3204 14 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
trisodium;2-[4-[(2-amino-4-oxidophenyl)diazenyl]anilino]-5-[(1-amino-8-oxido-7-phenyldiazenyl-3,6-disulfonaphthalen-2-yl)diazenyl]benzenesulfonate
InChIKey
GWAKFAUFNNPZFE-UHFFFAOYSA-K
SMILES
C1=CC=C(C=C1)N=NC2=C(C3=C(C(=C(C=C3C=C2S(=O)(=O)O)S(=O)(=O)O)N=NC4=CC(=C(C=C4)NC5=CC=C(C=C5)N=NC6=C(C=C(C=C6)[O-])N)S(=O)(=O)[O-])N)[O-].[Na+].[Na+].[Na+]
Synonyms (4)
- Direct Black 168
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