C24H20N2
336.4 g/mol
Dye & PigmentWarning
N,N'-Diphenylbenzidine
CAS531-91-9EC208-521-7
Category
Dye & Pigment
Compound Class
Amine
Primary Use
dye intermediate
N,N'-Diphenylbenzidine is an organic compound primarily used as a dye intermediate in the synthesis of various dyes and pigments. It features two amine groups and four aromatic rings, contributing to its structural role in organic chemical manufacturing.
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
StrongStructure SimilarSimilarity 0.94
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[1,1',4',1''-Terphenyl]-4-amine
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electronic material or OLED intermediate
StrongStructure SimilarSimilarity 0.88
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ReferenceSame Category
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photographic developer intermediate
ReferenceSame Category
N,N-dimethyl-p-phenylenediamine sulfate
CAS536-47-0
Oxidation base for hair dyes
ReferenceSame Category
4,4'-diaminodiphenylamine monosulfate
CAS53760-27-3
dye intermediate
Safety Reference
Warning
H302Harmful if swallowed
H312Harmful in contact with skin
H332Harmful if inhaled
H351Suspected of causing cancer
Customs Tariff Classification
The international HS code for N,N'-Diphenylbenzidine (CAS 531-91-9) is 2921.59.
HS code (international, 6-digit)
2921.59
EU CN code (8-digit)
2921 59 90
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
4-(4-anilinophenyl)-N-phenylaniline
InChIKey
FDRNXKXKFNHNCA-UHFFFAOYSA-N
SMILES
C1=CC=C(C=C1)NC2=CC=C(C=C2)C3=CC=C(C=C3)NC4=CC=CC=C4
Synonyms (22)
- 4,4'-Dianilinobiphenyl
- Benzidine, N,N'-diphenyl-
- Benzidine, N,N'diphenyl (8CI)
- Benzidine,N'-diphenyl-
- Diphenylbenzidine
- N,N'-Diphenylbenzidine
- N4,N4'Diphenyl4,4'diamine
- [1,4'-diamine, N,N'-diphenyl-
- diphenylbenzidin
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