Molekula
N,N-Diphenylbenzidine
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
N,N-Diphenylbenzidine is an organic compound primarily used as an analytical and redox reagent, for example as a redox indicator and in tests for nitrate, nitrite and oxidizing agents. It is also employed in the manufacture of certain polymers and as a chemical reagent in analytical applications. This solid compound has a CAS number of 531-91-9, a molecular formula of 4-(C6H5NH)C6H4C6H4-4-(NHC6H5), and a molecular weight of 336.43 g/mol. It is stable at ambient storage conditions but requires careful handling, as indicated by its warning signal word. Molekula supplies N,N-Diphenylbenzidine from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
In stock — same-day dispatch
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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10 g — £95.50 per pack ex VAT · £114.60 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Solid |
| Identification | Conforms to reference |
| Assay | ≥99.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90034190 |
| CAS Number | 531-91-9 |
| IUPAC Name | 4-(4-anilinophenyl)-N-phenylaniline |
| EC Number | 208-521-7 |
| Molecular Formula | 4-(C6H5NH)C6H4C6H4-4-(NHC6H5) |
| Molecular Weight | 336.43 |
| Exact Mass | 336.1626 |
| SMILES | C1=CC=C(C=C1)NC2=CC=C(C=C2)C3=CC=C(C=C3)NC4=CC=CC=C4 |
| InChIKey | FDRNXKXKFNHNCA-UHFFFAOYSA-N |
| 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 |
| PubChem CID | 68280 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2921.59.8090 |
| Tariff Code | 2921599090 |
Safety & GHS
-
Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- H302 + H312 + H332 Harmful if swallowed, in contact with skin or if inhaled
- H351 Suspected of causing cancer
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, English (US), French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- (1,1'Biphenyl)4,4'diamine, N4,N4'diphenyl
- [1,1'-Biphenyl]-4,4'-diamine, N,N'-diphenyl-
- 4,4'-Dianilinobiphenyl
- 4,4'Bis(phenylamino)1,1'biphenyl
- Benzidine, N,N'-diphenyl-
- Diphenylbenzidine
- FDRNXKXKFNHNCA-UHFFFAOYSA-N
- N(4),N(4')-Diphenyl-biphenyl-4,4'-diamine
- N4,N4'-Diphenyl-[1,1'-biphenyl]-4,4'-diamine
- N4,N4'Diphenyl4,4'diamine
Frequently asked questions
What is N,N-Diphenylbenzidine commonly used for?
N,N-Diphenylbenzidine is primarily used as an analytical and redox reagent, for example as a redox indicator and in tests for nitrate, nitrite and oxidizing agents. It is also used in the production of certain types of polymers and in the synthesis of organic light-emitting diodes (OLEDs).
What is the molecular formula and molecular weight of N,N-Diphenylbenzidine?
The molecular formula is 4-(C6H5NH)C6H4C6H4-4-(NHC6H5) and the molecular weight is 336.43 g/mol.
What is the recommended storage condition for N,N-Diphenylbenzidine?
Store N,N-Diphenylbenzidine at ambient temperature in a cool, dry place, away from direct sunlight and incompatible substances.
What grades or purity levels of N,N-Diphenylbenzidine does Molekula supply?
Molekula supplies N,N-Diphenylbenzidine in technical and reagent grades, with purity levels typically ≥98%.
Can Molekula supply N,N-Diphenylbenzidine in bulk quantities?
Yes, Molekula can supply N,N-Diphenylbenzidine in bulk, with quantities tailored to your specific requirements.
What documentation comes with an order of N,N-Diphenylbenzidine?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and a product specification sheet.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.