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N,N'-Diphenylbenzidine

N,N'-Diphenylbenzidine structure

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

Last updated:2024-01-16 18:38:52

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N,N'-Diphenylbenzidine Properties

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

Safety Statements

22-24/25

RIDADR

2811

WGK Germany

TSCA

Yes

HazardClass

6.1(b)

PackingGroup

III

HS Code

29215900

NFPA 704

	1
0		1

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

Product number	Packaging	Price	Buy
D205206	10g	$119	Buy
8.20530	10G	$126	Buy
D0878	5g	$71	Buy
D0878	25g	$214	Buy
A13802	5g	$58.7	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%). 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 synthesis

Synthesis of N,N'-Diphenylbenzidine from 4,4'-Dibromobiphenyl and Aniline

N,N'-Diphenylbenzidine Preparation Products And Raw materials

Raw materials

Xylene Sodium bisulfite Potassium dichromate Diphenylamine Acetic acid

Sulfuric acid Benzenamine, N-hydroxy-N-phenyl- 2-Aminodiphenylamine 1,1-DIPHENYLHYDRAZINE N-TRIMETHYLSILYLANILINE

TETRAPHENYLHYDRAZINE 4,4'-Dibromobiphenyl Benzidine Aniline

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Preparation Products

N,N'-Diphenylbenzidine Suppliers

Global( 397)Suppliers

Supplier	Tel	Email	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	12456	58
Hebei Yanxi Chemical Co., Ltd.	+8617531190177	peter@yan-xi.com	China	5993	58
Chongqing Zhihe Biopharmaceutical Co., Ltd.	+86-18580541567 +86-17782035140	sales@zhswyy.com	China	338	58
Henan Fengda Chemical Co., Ltd	+86-371-86557731 +86-13613820652	info@fdachem.com	China	8095	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	15933	58
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21691	55
ATK CHEMICAL COMPANY LIMITED	+undefined-21-51877795	ivan@atkchemical.com	China	32480	60

Supplier	Advantage
Springchem New Material Technology Co.,Limited	57
Nanjing Triumpharm Co.,Ltd	58
Hebei Mojin Biotechnology Co., Ltd	58
Hebei Yanxi Chemical Co., Ltd.	58
Chongqing Zhihe Biopharmaceutical Co., Ltd.	58
Henan Fengda Chemical Co., Ltd	58
Capot Chemical Co.,Ltd.	60
Shanghai Daken Advanced Materials Co.,Ltd	58
Henan Tianfu Chemical Co.,Ltd.	55
ATK CHEMICAL COMPANY LIMITED	60

View Lastest Price from N,N'-Diphenylbenzidine manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2024-04-26	N,N'-Diphenylbenzidine 531-91-9	US $0.00-0.00 / kg	0.10000000149011612kg	99%	20tons	Chongqing Zhihe Biopharmaceutical Co., Ltd.
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

N,N'-Diphenylbenzidine
531-91-9
US $0.00-0.00 / kg
99%
Chongqing Zhihe Biopharmaceutical 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 Spectrum

N,N'-Diphenylbenzidine(531-91-9)MS N,N'-Diphenylbenzidine(531-91-9)¹HNMR N,N'-Diphenylbenzidine(531-91-9)¹³CNMR N,N'-Diphenylbenzidine(531-91-9)IR1 N,N'-Diphenylbenzidine(531-91-9)IR2 N,N'-Diphenylbenzidine(531-91-9)Raman

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