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4-Cyano-4'-pentylbiphenyl

Product Name
4-Cyano-4'-pentylbiphenyl
CAS No.
40817-08-1
Chemical Name
4-Cyano-4'-pentylbiphenyl
Synonyms
CB5;5CB;RO-CM-5115;4-Cyano-4'-pentyL;TIMTEC-BB SBB008542;Amyl biphenyl nitrile;4-AMYL-4'-CYANOBIPHENYL;4-cyano-4-pentylbipheny;Pentyl biphenyl nitrile;4-Pentyl-4’-cyanobipheny
CBNumber
CB9853607
Molecular Formula
C18H19N
Formula Weight
249.35
MOL File
40817-08-1.mol
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4-Cyano-4'-pentylbiphenyl Property

Melting point:
34 °C
Boiling point:
140-150 °C0.5 mm Hg(lit.)
Density 
1.008 g/mL at 25 °C(lit.)
refractive index 
n20/D 1.532(lit.)
Flash point:
>230 °F
storage temp. 
Sealed in dry,Room Temperature
solubility 
Chloroform (Slightly), Methanol (Slightly)
form 
liquid crystal (nematic)
color 
Off-White
Water Solubility 
insoluble
InChI
InChI=1S/C18H19N/c1-2-3-4-5-15-6-10-17(11-7-15)18-12-8-16(14-19)9-13-18/h6-13H,2-5H2,1H3
InChIKey
HHPCNRKYVYWYAU-UHFFFAOYSA-N
SMILES
C1(C2=CC=C(CCCCC)C=C2)=CC=C(C#N)C=C1
CAS DataBase Reference
40817-08-1(CAS DataBase Reference)
NIST Chemistry Reference
[1,1'-Biphenyl]-4-carbonitrile, 4'-pentyl-(40817-08-1)
EPA Substance Registry System
[1,1'-Biphenyl]-4-carbonitrile, 4'-pentyl- (40817-08-1)
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Safety

Hazard Codes 
Xn
Risk Statements 
20/21/22-36/37/38
Safety Statements 
23-26-28-36-36/37/39
RIDADR 
3276
WGK Germany 
3
TSCA 
Yes
HazardClass 
6.1
PackingGroup 
III
HS Code 
29269090
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H317May cause an allergic skin reaction

Precautionary statements

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

P272Contaminated work clothing should not be allowed out of the workplace.

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

P302+P352IF ON SKIN: wash with plenty of soap and water.

P333+P313IF SKIN irritation or rash occurs: Get medical advice/attention.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
328510
Product name
4′-Pentyl-4-biphenylcarbonitrile
Purity
liquid crystal (nematic), 98%
Packaging
1g
Price
$99.54
Updated
2025/07/31
TCI Chemical
Product number
C1550
Product name
4-Cyano-4'-pentylbiphenyl
Purity
>98.0%(GC)
Packaging
1g
Price
$66
Updated
2025/07/31
TCI Chemical
Product number
C1550
Product name
4-Cyano-4'-pentylbiphenyl
Purity
>98.0%(GC)
Packaging
5g
Price
$185
Updated
2025/07/31
TCI Chemical
Product number
C1550
Product name
4-Cyano-4'-pentylbiphenyl
Purity
>98.0%(GC)
Packaging
25g
Price
$697
Updated
2025/07/31
TRC
Product number
C989398
Product name
4-Cyano-4''-N-pentylbiphenyl
Packaging
1g
Price
$65
Updated
2021/12/16
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4-Cyano-4'-pentylbiphenyl Chemical Properties,Usage,Production

Chemical Properties

white to light yellow crysta

Uses

4-Cyano-4'-n-pentylbiphenyl is used in the preparation of 4'-pentylbiphenyl-4-carboxylic acid by acidic hydrolysis using sulfuric acid as a reagent.

Uses

Intermediates of Liquid Crystals

General Description

4′-Pentyl-4-biphenylcarbonitrile (5CB) is a nematic liquid crystal. 5CB undergoes phase transition from crystalline to nematic then to isotropic state at 18oC and 35oC respectively. It may be produced by modifying biphenyl.2

Synthesis

63619-59-0

40817-08-1

General procedure for the synthesis of 4'-n-pentyl-4-cyanobiphenyl from p-bromopentyl biphenyl: To a dry flask containing magnesium shavings (0.29 g, 12 mmol) was added a solution of 1-bromo-4-methylbenzene (1.37 g, 8.0 mmol) in tetrahydrofuran (THF, 8 mL) at room temperature. After stirring the reaction mixture for 2 h, N,N-dimethylformamide (DMF, 1.3 mL, 12 mmol) was slowly added. The reaction mixture was cooled to 0°C and stirring was continued for 2 hours. Subsequently, ammonia solution (7 mL, 28-30%) and iodine (I2, 4.06 g, 16 mmol) were added to the reaction system. After stirring the reaction mixture for 2 h at room temperature, it was poured into saturated aqueous sodium sulfite (Na2SO3) solution and extracted with chloroform (CHCl3, 3 x 30 mL). The organic layers were combined, dried with anhydrous sodium sulfite (Na2SO4) and filtered. After the solvent was removed by distillation under reduced pressure, the residue was purified by silica gel short column chromatography (eluent: hexane/ethyl acetate = 9:1, v/v) to afford pure 4-methylbenzonitrile (0.77 g) in 82% yield.

References

[1] Tetrahedron, 2013, vol. 69, # 5, p. 1462 - 1469

4-Cyano-4'-pentylbiphenyl Preparation Products And Raw materials

Raw materials

Preparation Products

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4-Cyano-4'-pentylbiphenyl Suppliers

Americas 1 Belgium 1 China 224 China Hong Kong 1 Europe 3 Germany 4 India 5 Japan 4 South Korea 1 Sweden 2 Switzerland 1 United Kingdom 11 United States 28 Global 286
Yantai Liquid Crystal Materials Co., Ltd.
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0535-0535-6300169 15253505805
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(535) 6300169
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yangli@ytderun.com
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China
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Hebei Han'en New Material Technology Co., Ltd
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18032751346
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2929218726@qq.com
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China
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SiChuang NanBu Honesty Technology Co., Ltd.
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0838-5675166 15883665058
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0838-5675535
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nbcxkj@126.com
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China
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J & K SCIENTIFIC LTD.
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18210857532; 18210857532
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86-10-82849933
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jkinfo@jkchemical.com
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China
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Sichuan Ruibo Technology Co., Ltd
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+86-817-5586080
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+86-817-5527378
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China
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Meryer (Shanghai) Chemical Technology Co., Ltd.
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4006356688 18621169109
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86-21-61259102
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market03@meryer.com
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China
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INTATRADE GmbH
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+49 3493/605464
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+49 3493/605470
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sales@intatrade.de
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Germany
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Alfa Aesar
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400-6106006
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021-67582001/03/05
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saleschina@alfa-asia.com
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China
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TCI (Shanghai) Development Co., Ltd.
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021-67121386
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021-67121385
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Sales-CN@TCIchemicals.com
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China
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Beijing HwrkChemical Technology Co., Ltd
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18515581800 18501085097
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010-89508210
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sales.bj@hwrkchemical.com
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China
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View Lastest Price from 4-Cyano-4'-pentylbiphenyl manufacturers

HebeiShuoshengImportandExportco.,Ltd
Product
4-Cyano-4'-pentylbiphenyl 40817-08-1
Price
US $6.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
2000KG/Month
Release date
2024-08-02
Henan Aochuang Chemical Co.,Ltd.
Product
4-Cyano-4'-pentylbiphenyl 40817-08-1
Price
US $0.00-0.00/KG
Min. Order
1KG
Purity
98%
Supply Ability
1ton
Release date
2022-09-28
Hebei Longbang Technology Co., Ltd
Product
4-Cyano-4'-pentylbiphenyl 40817-08-1
Price
US $6.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
20TONS
Release date
2024-05-20

40817-08-1, 4-Cyano-4'-pentylbiphenylRelated Search:

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