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N,N'-Diphenylbenzidine

N,N'-Diphenylbenzidine Structure
N,N'-Diphenylbenzidine
  • CAS No.531-91-9
  • Chemical Name:N,N'-Diphenylbenzidine
  • CBNumber:CB2394561
  • Molecular Formula:C24H20N2
  • Formula Weight:336.43
  • MOL File:531-91-9.mol
N,N'-Diphenylbenzidine Property
  • 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)
  • form Fine Crystalline Powder
  • pka 1.31±0.40(Predicted)
  • 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)
  • UNSPSC Code 12352116
  • NACRES NA.22
Safety
  • 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:
    1
    0 1
Hazard and Precautionary Statements (GHS)
  • Symbol(GHS)
  • Signal wordWarning
  • 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
N,N'-Diphenylbenzidine Price More Price(13)
  • Brand: Sigma-Aldrich(India)
  • Product number: 8.20530
  • Product name : N,N′-Diphenylbenzidine
  • Purity: for synthesis
  • Packaging: 5G
  • Price: ₹4380
  • Updated: 2022/06/14
  • Buy: Buy
  • Brand: Sigma-Aldrich(India)
  • Product number: D205206
  • Product name : N,N′-Diphenylbenzidine
  • Purity: 97%
  • Packaging: 10G
  • Price: ₹6808.93
  • Updated: 2022/06/14
  • Buy: Buy
  • Brand: Sigma-Aldrich(India)
  • Product number: 8.20530
  • Product name : N,N′-Diphenylbenzidine
  • Purity: for synthesis
  • Packaging: 10G
  • Price: ₹18109.99
  • Updated: 2022/06/14
  • Buy: Buy
  • Brand: ALFA India
  • Product number: ALF-A13802-14
  • Product name : N,N'-Diphenylbenzidine, 98%
  • Purity: 
  • Packaging: 25g
  • Price: ₹14600
  • Updated: 2022/05/26
  • Buy: Buy
  • Brand: ALFA India
  • Product number: ALF-A13802-06
  • Product name : N,N'-Diphenylbenzidine, 98%
  • Purity: 
  • Packaging: 5g
  • Price: ₹3834
  • Updated: 2022/05/26
  • Buy: Buy

N,N'-Diphenylbenzidine Chemical Properties,Usage,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%). synthesis of N,N'-Diphenylbenzidine.png
  • 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
Raw materials
Preparation Products
N,N'-Diphenylbenzidine Suppliers
Global(418)Suppliers
  • Supplier：
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    Henan Fengda Chemical Co., Ltd
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  • Advantage：60
N,N'-Diphenylbenzidine Spectrum
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