Description

N,N’-Diphenylbenzidine (CAS 531-91-9) is a high-purity organic compound with the molecular formula C₂₄H₂₀N₂. This aromatic amine derivative, also known as 4-(4-anilinophenyl)-N-phenylaniline, is widely utilized in research and industrial applications due to its unique electrochemical and photophysical properties. The compound appears as a light yellow to tan crystalline powder with a molecular weight of 336.43 g/mol. It is soluble in organic solvents such as DMF, DMSO, and dichloromethane, but exhibits limited solubility in water. N,N’-Diphenylbenzidine serves as a crucial intermediate in the synthesis of conductive polymers, organic semiconductors, and electrochromic materials. Its extended π-conjugated system makes it particularly valuable for optoelectronic applications. Our product is rigorously tested to ensure ≥98% purity (HPLC) and is supplied with comprehensive analytical documentation including ¹H NMR, HPLC chromatograms, and mass spectrometry data. Proper storage recommendations include protection from light at 2-8°C in a tightly sealed container under inert atmosphere.

Properties

• CAS Number: 531-91-9
• Complexity: 343
• IUPAC Name: 4-(4-anilinophenyl)-N-phenyl-aniline
• InChI: InChI=1S/C24H20N2/c1-3-7-21(8-4-1)25-23-15-11-19(12-16-23)20-13-17-24(18-14-20)26-22-9-5-2-6-10-22/h1-18,25-26H
• InChI Key: FDRNXKXKFNHNCA-UHFFFAOYSA-N
• Exact Mass: 336.162648646
• Molecular Formula: C24H20N2
• Molecular Weight: 336.4
• SMILES: C1=CC=C(C=C1)NC2=CC=C(C=C2)C3=CC=C(C=C3)NC4=CC=CC=C4
• Topological: 24.1
• Monoisotopic Mass: 336.162648646
• Physical Description: Solid; Grey odorless powder;
• Synonyms: N,N’-Diphenylbenzidine, 531-91-9, N4,N4′-Diphenyl-[1,1′-biphenyl]-4,4′-diamine, Diphenylbenzidine, Benzidine, N,N’-diphenyl-, [1,1′-Biphenyl]-4,4′-diamine, N,N’-diphenyl-, UNII-8IO8V406YP, 8IO8V406YP, N,N-Diphenylbenzidine, NSC 4310, NSC-4310, EINECS 208-521-7, AI3-18241, DTXSID0060197, (1,1′-Biphenyl)-4,4′-diamine, N,N’-diphenyl-, N,N’-DIPHENYLBENZIDINE [MI], 4,4′-BIS(PHENYLAMINO)-1,1′-BIPHENYL, N(4),N(4′)-Diphenyl-biphenyl-4,4′-diamine, N4,N4′-DIPHENYL-(1,1′-BIPHENYL)-4,4′-DIAMINE, Benzidine, N,N’diphenyl, N4,N4’Diphenyl4,4’diamine, DTXCID0041355, Benzidine, N,N’diphenyl (8CI), Benzidine, N,N’-diphenyl-(8CI), 4,4’Bis(phenylamino)1,1’biphenyl, (1,1’Biphenyl)4,4’diamine, N,N’diphenyl, (1,1’Biphenyl)4,4’diamine, N4,N4’diphenyl, 208-521-7, fdrnxkxkfnhnca-uhfffaoysa-n, 4,4′-Dianilinobiphenyl, 4-(4-anilinophenyl)-N-phenylaniline, MFCD00003016, N.N-Diphenylbenzidine, N,N’-diphenyl benzidine, C24H20N2, N,N’-DIPHENYL BIPHENYLAMINE;Diphenylbenzidine;4,4′-Bis(phenylamino)biphenyl;N,N’-Diphenylbiphenyl-4,4′-diamine,N,N’-Diphenyl-1,1′-biphenyl-4,4′-diamine;N4,N4′-Diphenyl-[1,1′-biphenyl]-4,4′-diamine;N,N-diphenylbenzidine, phenyl{4-[4-(phenylamino)phenyl]phenyl}amine, diphenylbenzidin, N-phenyl-4-[4-(phenylamino)phenyl]aniline, Diphenyl benzidine, NSC4310, 4,4′-Bis(phenylamino)-1,1′-biphenyl; 4,4′-Bis(phenylamino)biphenyl; Diphenylbenzidine; N,N’-Diphenyl-[1,1′-biphenyl]-4,4′-diamine; N,N’-Diphenyl-p,p’-biphenylenediamine; NSC 4310, N,N’-DIPHENYL BIPHENYLAMINE;Diphenylbenzidine;4,4′-Bis(phenylamino)biphenyl;N,N’-Diphenylbiphenyl-4,4′-diamine,N,N’-Diphenyl-1,1′-biphenyl-4,4′-diamine;N4,N4′-Diphenyl-[1,1′-biphenyl]-4,4′-diamine;N,N’-diphenylbenzidine, N4,N4′-diphenylbiphenyl-4,4′-diamine, 4,4-Dianilinobiphenyl, Benzidine,N’-diphenyl-, N,N’-Diphenylbenzidine, N,N inverted exclamation mark -Diphenylbenzidine, Oprea1_382609, SCHEMBL67901, N,N’-Diphenylbenzidine, 97%, MSK1280, [1,4′-diamine, N,N’-diphenyl-, BCP22040, SBB002946, AKOS001584969, CS-W011922, FD00206, NCGC00336733-01, AC-24795, AS-14821, SY012833, DB-004560, DB-050500, D0878, NS00032676, ST50308288, N,N’-diphenyl[1,1′-biphenyl]-4,4′-diamine, AB01330455-02, N,N’-diphenyl-[1,1′-biphenyl]-4,4′-diamine, SR-01000389237, SR-01000389237-1, (1,1′-Biphenyl)-4,4′-diamine, N4,N4′-diphenyl-, Q27270591, N4,N4′-Diphenyl-[1,1′-biphenyl]-4,4′-diamine;Diphenylbenzidine;4,4′-Dianilinobiphenyl

Application

N,N’-Diphenylbenzidine is primarily employed as a hole-transport material in organic light-emitting diodes (OLEDs) and other optoelectronic devices. The compound functions as an efficient electron donor in charge-transfer complexes for photovoltaic applications. Researchers utilize this material as a building block for conjugated polymers in organic semiconductor development. Its stable radical cation form makes it valuable for electrochemical studies and sensor applications.

Safety and Hazards

GHS Hazard Statements

• H302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]
• H312 (100%): Harmful in contact with skin [Warning Acute toxicity, dermal]
• H332 (100%): Harmful if inhaled [Warning Acute toxicity, inhalation]
• H351 (50%): Suspected of causing cancer [Warning Carcinogenicity]

Precautionary Statements

• P203, P261, P264, P270, P271, P280, P301+P317, P302+P352, P304+P340, P317, P318, P321, P330, P362+P364, P405, and P501

Hazard Classes and Categories

• Acute Tox. 4 (100%)
• Acute Tox. 4 (100%)
• Acute Tox. 4 (100%)
• Carc. 2 (50%)

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