N,N'-Diphenylbenzidine

Product Name: N,N'-Diphenylbenzidine
CAS No.: 531-91-9
Chemical Name: N,N'-Diphenylbenzidine
Synonyms: DFRR;N,N'-DiphenyL;Diphenylbenzidine;DEPHENYLBENZIDINE;TIMTEC-BB SBB002946;Benzidine, N,N'-diph;N'-Diphenylbenzidine;N,N-Diphenylbenzidne;N,N'-Diphenylbenzidi;SYM-DIPHENYLBENZIDINE
CBNumber: CB2394561
Molecular Formula: C24H20N2
Formula Weight: 336.43
MOL File: 531-91-9.mol

More

Less

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)
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)

More

Less

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

More

Less

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H351Suspected of causing cancer

Precautionary statements

P201Obtain special instructions before use.

P202Do not handle until all safety precautions have been read and understood.

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P308+P313IF exposed or concerned: Get medical advice/attention.

P405Store locked up.

P501Dispose of contents/container to..…

More

Less

N-Bromosuccinimide Price

Sigma-Aldrich

Product number: D205206
Product name: N,N′-Diphenylbenzidine
Purity: 97%
Packaging: 10g
Price: $126
Updated: 2025/07/31

Sigma-Aldrich

Product number: 8.20530
Product name: N,N′-Diphenylbenzidine
Purity: for synthesis
Packaging: 10G
Price: $137
Updated: 2025/07/31

TCI Chemical

Product number: D0878
Product name: N,N'-Diphenylbenzidine
Purity: >98.0%(HPLC)(N)
Packaging: 5g
Price: $67
Updated: 2025/07/31

TCI Chemical

Product number: D0878
Product name: N,N'-Diphenylbenzidine
Purity: >98.0%(HPLC)(N)
Packaging: 25g
Price: $203
Updated: 2025/07/31

TRC

Product number: D487268
Product name: N,N''-Diphenylbenzidine
Packaging: 10g
Price: $45
Updated: 2021/12/16

More

Less

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%).

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

Xylene Sodium bisulfite Potassium dichromate Diphenylamine Acetic acid Sulfuric acid

Preparation Products

More

Less

N,N'-Diphenylbenzidine Suppliers

Americas 1 Belgium 1 China 341 Czech Republic 2 Europe 3 Germany 5 India 21 Japan 6 Slovakia 1 Switzerland 2 United Kingdom 12 United States 34 Global 429

Alchem Pharmtech,Inc.

Tel: 8485655694
Email: sales@alchempharmtech.com
Country: United States
ProdList: 63687
Advantage: 58

AB PharmaTech,LLC

Tel: 323-480-4688
Fax: 323-480-4688
Email: sales@acrospharmatech.com
Country: United States
ProdList: 989
Advantage: 55

Aladdin Scientific

Tel
Email: tp@aladdinsci.com
Country: United States
ProdList: 52923
Advantage: 58

Aladdin Scientific

Tel
Email: tp@aladdinsci.com
Country: United States
ProdList: 57505
Advantage: 58

Alfa Chemistry

Tel: --
Fax: --
Email: info@Alfa-Chemistry.com
Country: United States
ProdList: 6814
Advantage: 0

Sarchem Laboratories, Inc.,

Tel: --
Fax: --
Country: United States
ProdList: 349
Advantage: 58

Redox Scientific

Tel: --
Fax: --
Email: info@redoxsci.com
Country: United States
ProdList: 2380
Advantage: 58

Alichem Inc.

Tel: --
Fax: --
Email: sales@alichem.com
Country: United States
ProdList: 6167
Advantage: 58

Pennbio Chemicals (U.S.A.)

Tel: --
Fax: --
Country: United States
ProdList: 240
Advantage: 58

Oakwood Products, Inc.

Tel: --
Fax: --
Email: sales@oakwoodchemical.com
Country: United States
ProdList: 6193
Advantage: 74

Spectrum Chemical Mfg. Corp.

Tel: --
Fax: --
Email: marketing@spectrumchemical.com
Country: United States
ProdList: 3113
Advantage: 60

Riedel-de Haen AG

Tel: --
Fax: --
Country: United States
ProdList: 6773
Advantage: 87

TCI America

Tel: --
Fax: --
Email: sales@tciamerica.com
Country: United States
ProdList: 6909
Advantage: 75

Frontier Scientific, Inc.

Tel: --
Fax: --
Email: sales@frontiersci.com
Country: United States
ProdList: 6222
Advantage: 86

Matrix Scientific

Tel: --
Fax: --
Email: sales@matrixscientific.com
Country: United States
ProdList: 6632
Advantage: 80

Anvia Chemicals, LLC

Tel: --
Fax: --
Email: sales@anviachem.com
Country: United States
ProdList: 3933
Advantage: 0

Waterstone Technology, LLC

Tel: --
Fax: --
Email: sales@waterstonetech.com
Country: United States
ProdList: 6786
Advantage: 30

ChemService Inc.

Tel: --
Fax: --
Country: United States
ProdList: 6379
Advantage: 68

AstaTech, Inc

Tel: --
Fax: --
Email: sales@astatechinc.com
Country: United States
ProdList: 6371
Advantage: 58

Alfa Aesar

Tel: --
Fax: --
Email: tech@alfa.com
Country: United States
ProdList: 6814
Advantage: 81

Naugra Export

Tel: --
Fax: --
Country: United States
ProdList: 1332
Advantage: 47

HONEST JOY HOLDINGS LIMITED

Tel: --
Fax: --
Email: sales@honestjoy.cn
Country: United States
ProdList: 6675
Advantage: 54

Advance Scientific & Chemical

Tel: --
Fax: --
Email: sales@advance-scientific.com
Country: United States
ProdList: 6419
Advantage: 71

3B Scientific Corporation

Tel: --
Fax: --
Email: sales@3bsc.com
Country: United States
ProdList: 6718
Advantage: 47

AK Scientific, Inc.

Tel: --
Fax: --
Email: sales@aksci.com
Country: United States
ProdList: 6347
Advantage: 65

Sciencelab.com, Inc.

Tel: --
Fax: --
Email: accounting@sciencelab.com
Country: United States
ProdList: 4159
Advantage: 82

Loba Chemie Pvt. Ltd.

Tel: --
Fax: --
Country: United States
ProdList: 1945
Advantage: 71

TimTec Corporation

Tel: --
Fax: --
Email: info@timtec.net
Country: United States
ProdList: 6891
Advantage: 68

Pfaltz & Bauer, Inc.

Tel: --
Fax: --
Email: sales@pfaltzandbauer.com
Country: United States
ProdList: 6828
Advantage: 72

Eastern Chemical Corp.

Tel: --
Fax: --
Email: eastern@u-g.com
Country: United States
ProdList: 2786
Advantage: 34

Spectrum Chemicals & Laboratory Products

Tel: --
Fax: --
Email: sales@spectrumchemical.com
Country: United States
ProdList: 6699
Advantage: 77

MP Biomedicals, Inc.

Tel: --
Fax: --
Country: United States
ProdList: 6561
Advantage: 81

Kiran Light Laboratories

Tel: --
Fax: --
Country: United States
ProdList: 863
Advantage: 43

NILE CHEMICALS

Tel: --
Fax: --
Email: nilechem@vsnl.net
Country: United States
ProdList: 1369
Advantage: 61

More

Less

View Lastest Price from N,N'-Diphenylbenzidine manufacturers

Hebei Zhuanglai Chemical Trading Co Ltd

Product: N, N'-Diphenyl- Benzidine 531-91-9
Price: US $150.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: 500kg
Release date: 2024-12-19

Zhengzhou Anbu Chem Co.,Ltd

Product: N,N'-Diphenylbenzidine 531-91-9
Price: US $0.00/KG
Min. Order: 0.1KG
Purity: 98%
Supply Ability: 1000KGS
Release date: 2023-04-14

Zhengzhou Anbu Chem Co.,Ltd

Product: N,N'-Diphenylbenzidine 531-91-9
Price: US $0.00/KG
Min. Order: 0.1KG
Purity: 99%
Supply Ability: 1000KGS
Release date: 2023-06-13

531-91-9, N,N'-DiphenylbenzidineRelated Search:

2-Dimethylaminoisopropyl chloride hydrochloride Diphenylmethane 2,2'-Benzidinedisulfonic acid Dichlorodiphenylsilane 4,4'-Diaminodiphenylsulfone 4-Aminobenzoic acid Benzidine 1,3-Diphenyl-2-thiourea 4,4'-Methylenedianiline 4-Aminobiphenyl tert-Butylchlorodiphenylsilane Sulfanilic acid Diphenylphosphine 3,3',5,5'-Tetramethylbenzidine dihydrochloride Chlorodiphenylphosphine Diphenylsilane Pigment Yellow 13 N,N-Dibenzylethanolamine

N,N'-DIPHENYL BIPHENYLAMINE

N'-Diphenylbenzidine

4-(4-anilinophenyl)-N-phenylaniline

N,N'-Diphenylbenzidine, 97%, indicator

Benzidine, N,N'-diph

N,N'-(1,1'-Biphenyl-4,4'-diyl)bisaniline

N,N'-Diphenyl-1,1'-biphenyl-4,4'-diamine

N,N'-Diphenyl-4,4'-biphenyldiamine

N,N'-Diphenylbiphenyl-4,4'-diamine

N,N'-Diphenylbenzidine,97%

N,N-Diphenylbenzidne

N,N'-Diphenylbenzidi

<i>N,N'</i>-Diphenylbenzidine

4,4'-BIS(ANILINO)BIPHENY

[1,1'-Biphenyl]-4,4'-diamine,N4,N4'-diphenyl-

N,N'-Diphenylbenzidine,2-aMine N,N'-diphenylbenzidine

N,N'-Diphenylbenzidine DPB

N,N'-Diphenylbenzidine 97%

(4),N(4')-Diphenyl-biphenyl-4,4'-diamine

1’-biphenyl]-4,4’-diamine,n,n’-diphenyl-[

Benzidine, N,N'-diphenyl-

Diphenylbenzidine

N,N-Diphenyl Diphenylamine

N,N-diphenylbenzidine (sym.)

N,N'-DiphenylBenzidineGr

SYM-DIPHENYLBENZIDINE

TIMTEC-BB SBB002946

4,4'-DIANILINOBIPHENYL

DEPHENYLBENZIDINE

4,4'-Bis(phenylamino)biphenyl

1,1-Biphenyl-4,4-diamine, N,N-diphenyl-

N,N'-DiphenyL

N,N'-Diphenylbenzidine &gt

N,N'-DIPHENYLBENZIDINE FOR SYNTHESIS

N,N'-Diphenylbenzidine USP/EP/BP

DFRR

N,N'-bisphenyl-(1,1'-biphenyl)-4,4'-diamine

N,N-Diphenyl benzidine 98% AR 5GM

Diphenyl benzidine solution

N,N'-Diphenyl benzidine, GR 99%

N,N`-DIPHENYL BENZIDINE AR

N,N-Diphenylbenzidine, 98+%

N,N' -diphenylbiphenylene diamine

4,4'-Bis(phenylamino)-1,1'-biphenyl

N,N'-Diphenylbenzidine, ≥ 98.0%

N,N'-Diphenylbenzidine

N4,N4'-Diphenyl-[1,1'-biphenyl]-4,4'-diamine

4,4'-Bis(anilino)biphenyl

N,N'-Diphenyl Benzidine 98% AR

N,N'-Diphenylbenzidine

531-91-9

53-91-9

4C6H5NHC6H4C6H44NHC6H5

C24H20N2

Reagent for High-Performance Polymer Research

Biphenyls (for High-Performance Polymer Research)

Organic Building Blocks

Nitrogen Compounds