52364-71-3

Basic information

• Product Name: 4-Pentyloxy-[1,1'-biphenyl]-4'-carbonitrile
• Synonyms: 5OCB;AKOS BAR-2143;4'-(PENTYLOXY)-4-BIPHENYLCARBONITRILE;4-PENTYLOXY-4'-BIPHENYLCARBONITRILE;4-PENTYLOXY-4'-CYANOBIPHENYL;4'-N-AMYLOXY-4-BIPHENYLCARBONITRILE;4-N-AMYLOXY-4'-CYANOBIPHENYL;4'N-PENTYLOXYBIPHENYL-4-CARBONITRILE
• CAS NO: 52364-71-3
• Molecular Formula: C₁₈H₁₉NO
• Molecular Weight: 265.35
• EINECS: 257-875-9
• 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: 52364-71-3.mol
• Article Data: 3

Chemical Properties

• Melting Point: 52 °C
• Boiling Point: 418 °C at 760 mmHg
• Flash Point: >230 °F
• Appearance: /liquid crystal (nematic)
• Density: 1.07 g/cm³
• Storage Temp.: Sealed in dry,Room Temperature
• Solubility: very faint turbidity in Toluene
• CAS DataBase Reference: 4-Pentyloxy-[1,1'-biphenyl]-4'-carbonitrile(CAS DataBase Reference)
• NIST Chemistry Reference: 4-Pentyloxy-[1,1'-biphenyl]-4'-carbonitrile(52364-71-3)
• EPA Substance Registry System: 4-Pentyloxy-[1,1'-biphenyl]-4'-carbonitrile(52364-71-3)

Safety Data

• Hazard Codes: Xn,Xi
• Statements: 20/21/22-36/37/38
• Safety Statements: 26-36
• RIDADR: 3276
• WGK Germany: 3
• RTECS: DV1764550
• TSCA: Yes
• HazardClass: 6.1
• PackingGroup: III
• Hazardous Substances Data: 52364-71-3(Hazardous Substances Data)

Usage

Uses

Different sources of media describe the Uses of 52364-71-3 differently. You can refer to the following data:
1. 4'-Pentyloxy-[1,1'-biphenyl]-4-carbonitrile (cas# 52364-71-3) is a useful research chemical.
2. 5-OCB may be used in indicators and storage devices.
3. Intermediates of Liquid Crystals

Chemical Properties

White liquid

General Description

4′-(Pentyloxy)-4-biphenylcarbonitrile (5-OCB) liquid crystals are the member of the oxycyanobiphenyl family. It exhibits liquid crystalline phase in the temperature range of 47-67.5oC. Crystal and molecular structure of 5-OCB was reported. The crystals belong to the monoclinic system (a=21.378, b=5.695, c=12.789?). The 5-OCB molecules are antiparallel in layers. H NMR of the phase transitions has been studied.

Upstream product

• 544-92-3 copper(I) cyanide 
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• 78079-08-0 4-benzenesulfonyloxy-4'-bromobiphenyl 
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• 127783-75-9 4'-cyano-[1,1'-biphenyl]-4-yl acetate 
• 4854-84-6 4-amino-4'-cyanobiphenyl 
• 31835-63-9 4'-nitro-(1,1'-biphenyl)-4-carbonitrile 
• 19812-93-2 4-Cyano-4'-hydroxybiphenyl 

Downstream Products

• 937725-56-9 5,6,8-trifluoro-7-hexyloxy-3-(4'-pentyloxybiphenyl-4-yl)-4H-benzo[1,2,4]thiadiazine 
• 937725-67-2 N-(2,3,5-trifluoro-4-hexyloxy-6-(propylsulfanyl)phenyl)-4-(4-pentyloxyphenyl)benzamidine 
• 59748-15-1 4'-n-pentyloxybiphenyl-4-carboxylic acid 

Relevant articles and documents

CHARACTERIZATION OF THE HEXATIC B AND CRYSTAL B PHASES BY OPTICAL MICROSCOPY.

Recent investigations concerning the structure of the B phase have unearthed a variety of packing arrangements of the molecular layers for this smectic modification. Two general structures have been discovered; one in which the B phase has three-dimensional crystalline order (crystal B), and one that is characterized by short-range in-plane positional ordering of the constituent molecules, and long-range bond orientational order, both within and between the layers (hexatic B). In this present study n-hexyl 4 prime -n-pentyloxybiphenyl-4-carboxylate (650BC) has been synthesized and its smectic phases characterized. Typically, this ester exhibits an A,B,E phase sequence, with the B phase being of the hexatic type. The synthesis, microscopic textures, and miscibility studies are reported here. The results show that while the two types of B phase appear co-miscible by conventional optical methods, in fact X-ray diffraction studies show that a transition occurs between the two phases in certain binary mixtures. Thus, the hexatic B and crystal B modifications are thermodynamically distinct phases.

SYNTHESIS OF 4-ALKOXY-4'-CYANOBIPHENYLS

A preparative method was developed for the synthesis of liquid crystals of the 4-alkoxy-4'-cyanobiphenyl group.It involves the nitration of 4-cyanobiphenyl to 4-nitro-4'-cyanobiphenyl, reduction of the latter, diazotization of the obtained 4-amino-4'-cyanobiphenyl, and alkylation of the 4-hydroxy-4'-cyanobiphenyl formed during decomposition of the diazonium salt.