41122-71-8

Basic information

• Product Name: 4'-Heptyl-4-biphenylcarbonitrile
• Synonyms: 4'-Heptyl[1,1'-biphenyl]-4-carbonitrile;CB7;K21;RO-CM-5121;4-N-Heptyl-Biphenylcarbonitrile;4-(4'-n-heptylphenyl)benzonitrile;4'-Heptyl-4-cyanobiphenyl;[1,1'-Biphenyl]-4-carbonitrile, 4'-heptyl-
• CAS NO: 41122-71-8
• Molecular Formula: C₂₀H₂₃N
• Molecular Weight: 277.4
• EINECS: 255-229-0
• Product Categories: Biphenyl & Diphenyl ether;Biphenyls (Building Blocks for Liquid Crystals);Building Blocks for Liquid Crystals;Cyanobiphenyls & Analogs (Liquid Crystals);Functional Materials;Liquid Crystals & Related Compounds;Liquid Crystals;Nematic;Organic Electronics and Photonics
• Mol File: 41122-71-8.mol
• Article Data: 2

Chemical Properties

• Melting Point: 30-32°C
• Boiling Point: 210-211°C 2mm
• Flash Point: >230 °F
• Appearance: white crystals
• Density: 1.01 g/cm³
• Storage Temp.: Sealed in dry,Room Temperature
• Solubility: almost transparency in Toluene
• CAS DataBase Reference: 4'-Heptyl-4-biphenylcarbonitrile(CAS DataBase Reference)
• NIST Chemistry Reference: 4'-Heptyl-4-biphenylcarbonitrile(41122-71-8)
• EPA Substance Registry System: 4'-Heptyl-4-biphenylcarbonitrile(41122-71-8)

Safety Data

• Hazard Codes: Xn
• Statements: 20/21/22-36/37/38
• Safety Statements: 26-36
• RIDADR: 3276
• WGK Germany: 3
• TSCA: Yes
• HazardClass: 6.1
• PackingGroup: III
• Hazardous Substances Data: 41122-71-8(Hazardous Substances Data)

Usage

Chemical Properties

White solid

Uses

Intermediates of Liquid Crystals

General Description

4′-Heptyl-4-biphenylcarbonitrile (7CB) belongs to the family of thermotropic liquid crystals from the CB family. Crystal transition temperature of 7CB is 15oC and it melts at 36oC. 1

Upstream product

• 92-52-4 biphenyl 
• 2528-61-2 Heptanoic acid chloride 
• 59662-32-7 4-heptyl-1,1'-biphenyl 
• 59662-27-0 1-([1,1'-biphenyl]-4-yl)heptan-1-one 
• 93972-15-7 4'-Heptyl-biphenyl-4-carbaldehyde oxime 
• 75056-90-5 4-n-heptyl-4'-iodobiphenyl 
• 544-92-3 copper(I) cyanide 

Downstream Products

• 139023-56-6 trans-{PtBr₂(4-heptyl-4'-cyanobiphenyl)2} 
• 139023-57-7 trans-{PdCl₂(4-heptyl-4'-cyanobiphenyl)2} 
• 138998-15-9 trans-{PtCl₂(4-heptyl-4'-cyanobiphenyl)2} 
• 61733-41-3 4'-Heptyl-biphenyl-4-carboxylic acid 4-hexyloxy-phenyl ester 
• 61733-40-2 4'-Heptyl-biphenyl-4-carboxylic acid 4-pentyloxy-phenyl ester 
• 61733-39-9 4'-Heptyl-biphenyl-4-carboxylic acid 4-butoxy-phenyl ester 
• 61733-24-2 4-(4-n-heptylphenyl)-benzoic acid 4'-n-hexylphenyl ester 
• 61733-23-1 4-pentylphenyl 4'-heptyl(1,1'-biphenyl)-4-carboxylate 
• 61733-38-8 4'-Heptyl-biphenyl-4-carboxylic acid 4-propoxy-phenyl ester 
• 61733-37-7 4'-Heptyl-biphenyl-4-carboxylic acid 4-ethoxy-phenyl ester 
• 61733-22-0 4-(4-n-heptylphenyl)-benzoic acid 4'-n-butylphenyl ester 
• 61733-21-9 4-(4-n-heptylphenyl)-benzoic acid 4'-n-propylphenyl ester 
• 61733-36-6 4'-Heptyl-biphenyl-4-carboxylic acid 4-methoxy-phenyl ester 
• 61733-20-8 4-(4-n-heptylphenyl)-benzoic acid 4'-ethylphenyl ester 

Relevant articles and documents

SYNTHESIS OF 4-ALKYL-4'-CYANOBIPHENYLS

Liquid crystals of the 4-alkyl-4'-cyanobiphenyl group were synthesized without the use of copper cyanide. 4-Alkyl-4'-formylbiphenyls and the 4-formyloximes of 4'-alkylbiphenyl, which possess a liquid-crystalline state, were isolated.Beginning with the pentyl homolog, they form an enantiotropic nematic phase, and beginning with octyl homolog they also form a smectic meso phase.