N,N'-Diphenyl benzidine, GR 99%

Name: N,N'-Diphenyl benzidine, GR 99%
Brand: Vaqora Chemicals
SKU: VQ-000387

About N,N'-Diphenyl benzidine, GR 99%

Listed under CAS 531-91-9, N,N'-Diphenyl benzidine is an indicator available from Vaqora Chemicals (AR grade) with a typical assay of ≥99%. With the molecular formula C24H20N2, it has a molar mass of 336.4 g/mol. Its systematic (IUPAC) name is 4-(4-anilinophenyl)-N-phenylaniline. It is also known as Diphenylbenzidine or N,N'-Diphenylbenzidine.

In its supplied form it is a white to green to beige and faint grey to grey solid. Literature values give a melting point of 246-248 °C and a density of 1.17 g/cm3. Its solubility is described as insoluble in water. Store in a tightly closed container in a cool, dry and well-ventilated place. Under GHS it is labelled “Warning”, so handle it with suitable PPE and consult the SDS.

It is commonly used for titration end-point detection, pH determination, analytical testing and organic synthesis. Our customers for this product work in academic and industrial research and electronics and semiconductors.

Vaqora Chemicals supplies N,N'-Diphenyl benzidine in 1 g, 5 g, 10 g and 25 g packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Titration end-point detection
pH determination
Analytical testing
Organic synthesis

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	N,N'-Diphenyl benzidine, GR 99%
Catalogue No.	VQ-000387
CAS Number	531-91-9
IUPAC name	4-(4-anilinophenyl)-N-phenylaniline
Molecular formula	C₂₄H₂₀N₂
Molecular weight	336.4 g/mol
Exact mass	336.1626
Grade	AR
Purity / assay	≥99%
HSN code	29215990
InChIKey	FDRNXKXKFNHNCA-UHFFFAOYSA-N
SMILES	C1=CC=C(C=C1)NC2=CC=C(C=C2)C3=CC=C(C=C3)NC4=CC=CC=C4
PubChem CID	68280

Physical properties
Physical form	Solid
Appearance	White to green to beige and faint grey to grey solid
Melting point	246-248 °C
Density	1.17 g/cm3
Solubility	Insoluble in water
LogP (XLogP3)	6.6
H-bond donors / acceptors	2 / 2
TPSA	24.1 Å²
Synonyms	Diphenylbenzidine, N,N'-Diphenylbenzidine, N4,N4'-Diphenyl-[1,1'-biphenyl]-4,4'-diamine, Benzidine, N,N'-diphenyl-, [1,1'-Biphenyl]-4,4'-diamine, N,N'-diphenyl-, N,N-Diphenylbenzidine, (1,1'-Biphenyl)-4,4'-diamine, N,N'-diphenyl-, N(4),N(4')-Diphenyl-biphenyl-4,4'-diamine, Benzidine, N,N'diphenyl, N4,N4'Diphenyl4,4'diamine, Benzidine, N,N'diphenyl (8CI), Benzidine, N,N'-diphenyl-(8CI)

Safety & hazard information (GHS)

Harmful / irritant

Health hazard

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H312Harmful in contact with skin
H332Harmful if inhaled
H351Suspected of causing cancer

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

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 531-91-9

Diphenyl benzidine solution

CAS: 531-91-9
Formula: C₂₄H₂₀N₂
MW: 336.4 g/mol

VQ-003541

Frequently asked questions

What is the CAS number of N,N'-Diphenyl benzidine, GR 99%?

The CAS Registry Number of N,N'-Diphenyl benzidine, GR 99% is 531-91-9. It is also known as Diphenylbenzidine, N,N'-Diphenylbenzidine, N4,N4'-Diphenyl-[1,1'-biphenyl]-4,4'-diamine.

What is the molecular formula and molecular weight of N,N'-Diphenyl benzidine, GR 99%?

N,N'-Diphenyl benzidine, GR 99% has the molecular formula C24H20N2 and a molecular weight of 336.4 g/mol. Its IUPAC name is 4-(4-anilinophenyl)-N-phenylaniline.

Which grade and pack sizes of N,N'-Diphenyl benzidine, GR 99% can I order?

We supply N,N'-Diphenyl benzidine, GR 99% in AR (≥99%) grade, in 1 g, 5 g, 10 g, 25 g, 100 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with N,N'-Diphenyl benzidine, GR 99%?

Yes. Every lot of N,N'-Diphenyl benzidine, GR 99% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can N,N'-Diphenyl benzidine, GR 99% be shipped internationally?

Yes. N,N'-Diphenyl benzidine, GR 99% is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.