N,N'-Diphenylbenzidine
- CAS No.
- 531-91-9
- Chemical Name:
- N,N'-Diphenylbenzidine
- Synonyms
- DFRR;N,N'-DiphenyL;Diphenylbenzidine;DEPHENYLBENZIDINE;TIMTEC-BB SBB002946;N,N'-Diphenylbenzidi;N,N-Diphenylbenzidne;N'-Diphenylbenzidine;Benzidine, N,N'-diph;SYM-DIPHENYLBENZIDINE
- CBNumber:
- CB2394561
- Molecular Formula:
- C24H20N2
- Molecular Weight:
- 336.43
- MDL Number:
- MFCD00003016
- MOL File:
- 531-91-9.mol
- MSDS File:
- SDS
Melting point | 246-248 °C(lit.) |
---|---|
Boiling point | 462.9°C (rough estimate) |
Density | 1.1750 (rough estimate) |
vapor density | 11.6 (vs air) |
refractive index | 1.7620 (estimate) |
Flash point | >110°C |
storage temp. | Store below +30°C. |
solubility | Acetone (Slightly), DMF (Slightly), DMSO (Slightly), Ethyl Acetate (Slightly, Sonicated) |
pka | 1.31±0.40(Predicted) |
form | Fine Crystalline Powder |
color | Gray to brownish |
Water Solubility | Insoluble in water. |
Sensitive | Light Sensitive |
Merck | 14,3319 |
BRN | 2220993 |
InChIKey | FDRNXKXKFNHNCA-UHFFFAOYSA-N |
CAS DataBase Reference | 531-91-9(CAS DataBase Reference) |
FDA UNII | 8IO8V406YP |
NIST Chemistry Reference | [1,1'-Biphenyl]-4,4'-diamine, n,n'-diphenyl-(531-91-9) |
EPA Substance Registry System | [1,1'-Biphenyl]-4,4'-diamine, N,N'-diphenyl- (531-91-9) |
SAFETY
Risk and Safety Statements
Symbol(GHS) | GHS07,GHS08 |
|||||||||
---|---|---|---|---|---|---|---|---|---|---|
Signal word | Warning | |||||||||
Hazard statements | H302+H312+H332-H351 | |||||||||
Precautionary statements | P201-P202-P261-P264-P270-P271-P280-P301+P312+P330-P302+P352+P312+P362+P364-P304+P340+P312-P308+P313-P405-P501 | |||||||||
Hazard Codes | Xi | |||||||||
Safety Statements | 22-24/25 | |||||||||
RIDADR | 2811 | |||||||||
WGK Germany | 3 | |||||||||
F | 8 | |||||||||
TSCA | Yes | |||||||||
HazardClass | 6.1(b) | |||||||||
PackingGroup | III | |||||||||
HS Code | 29215900 | |||||||||
NFPA 704 |
|
N,N'-Diphenylbenzidine price More Price(34)
Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
---|---|---|---|---|---|---|---|
Sigma-Aldrich | D205206 | N,N′-Diphenylbenzidine 97% | 531-91-9 | 10g | $119 | 2024-03-01 | Buy |
Sigma-Aldrich | 8.20530 | N,N′-Diphenylbenzidine for synthesis | 531-91-9 | 10G | $126 | 2023-06-20 | Buy |
TCI Chemical | D0878 | N,N'-Diphenylbenzidine >98.0%(HPLC)(N) | 531-91-9 | 5g | $71 | 2024-03-01 | Buy |
TCI Chemical | D0878 | N,N'-Diphenylbenzidine >98.0%(HPLC)(N) | 531-91-9 | 25g | $214 | 2024-03-01 | Buy |
Alfa Aesar | A13802 | N,N'-Diphenylbenzidine, 98% | 531-91-9 | 5g | $58.7 | 2023-06-20 | Buy |
N,N'-Diphenylbenzidine Chemical Properties,Uses,Production
Chemical Properties
GREY TO BROWNISH FINE CRYSTALLINE POWDER
Uses
N,N'-Diphenylbenzidine is an indicator suitable for redox titrations, e.g. with dichromate or cerium(IV) sulfate 1,2. It is also used as intermediates in organic synthesis.
Uses
See diphenylamine.
Synthesis
The synthesis of N,N'-Diphenylbenzidine is as follows:
3.12 g (10mmol) of 4,4'-dibromodiphenyl, 2.3 mL (25 mmol) of aniline, 2.9 g (30 mmol) of t-BuONa, 183 mg (0.2 mmol) of Pd2(dba)3, and 20 mg (0.1 mmol) of P(t-Bu)3 were dissolved in 30 mL of toluene, and then stirred at 90°C for 3 hrs. The reaction mixture was cooled to room temperature and three times extracted with distilled water and diethyl ether. Precipitates in an organic layer were filtered, washed with acetone and diethyl ether, and then dried in vacuum to obtain 0.3g of the intermediate compound C (yield: 90%).
Purification Methods
Crystallise the benzidine from toluene or ethyl acetate. Store it in the dark. [Beilstein 13 H 223, 13 IV 368.]
N,N'-Diphenylbenzidine Preparation Products And Raw materials
Supplier | Tel | Country | ProdList | Advantage | |
---|---|---|---|---|---|
Springchem New Material Technology Co.,Limited | +86-021-62885108 +8613917661608 | info@spring-chem.com | China | 2068 | 57 |
Nanjing Triumpharm Co.,Ltd | +86-02586182925 +86-15105172550 | info@triumpharm.com | China | 129 | 58 |
Hebei Mojin Biotechnology Co., Ltd | +8613288715578 | sales@hbmojin.com | China | 12471 | 58 |
Hebei Yanxi Chemical Co., Ltd. | +8617531190177 | peter@yan-xi.com | China | 6000 | 58 |
Henan Fengda Chemical Co., Ltd | +86-371-86557731 +86-13613820652 | info@fdachem.com | China | 18232 | 58 |
Capot Chemical Co.,Ltd. | 571-85586718 +8613336195806 | sales@capotchem.com | China | 29797 | 60 |
Shanghai Daken Advanced Materials Co.,Ltd | +86-371-66670886 | info@dakenam.com | China | 15957 | 58 |
Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21689 | 55 |
ATK CHEMICAL COMPANY LIMITED | +undefined-21-51877795 | ivan@atkchemical.com | China | 32686 | 60 |
AB PharmaTech,LLC | 323-480-4688 | United States | 989 | 55 |
View Lastest Price from N,N'-Diphenylbenzidine manufacturers
Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
---|---|---|---|---|---|---|---|---|
2024-03-28 | N,N'-Diphenylbenzidine
531-91-9
|
US $0.00 / kg | 25kg | 98%-99% | Inquiry | PNP Biotech Co. Ltd | ||
2024-01-23 | N,N'-Diphenylbenzidine
531-91-9
|
US $0.00 / KG | 1KG | 98.0% Min | 150KG /month | Shanghai Daken Advanced Materials Co.,Ltd | ||
2024-01-02 | N,N'-Diphenylbenzidine
531-91-9
|
US $200.00-1.00 / KG | 1KG | 99%, 99.5% Sublimated | g-kg-tons, free sample is available | Henan Fengda Chemical Co., Ltd |
- N,N'-Diphenylbenzidine
531-91-9
- US $0.00 / kg
- 98%-99%
- PNP Biotech Co. Ltd
- N,N'-Diphenylbenzidine
531-91-9
- US $0.00 / KG
- 98.0% Min
- Shanghai Daken Advanced Materials Co.,Ltd
- N,N'-Diphenylbenzidine
531-91-9
- US $200.00-1.00 / KG
- 99%, 99.5% Sublimated
- Henan Fengda Chemical Co., Ltd