Description

4-Octyl-4’-Cyanobiphenyl is a high-purity liquid crystal compound, specifically a member of the cyanobiphenyl class, known for its stable nematic phase and excellent electro-optical properties. Its primary value lies in its role as a critical component in the formulation of advanced liquid crystal mixtures for display technologies. This compound is essential for manufacturers and R&D teams in the electronics, optoelectronics, and advanced materials sectors who require precise and reliable performance in their formulations.

Application

• Liquid Crystal Displays (LCDs): A key monomer for formulating nematic liquid crystal mixtures used in digital watches, calculators, instrument panels, and high-resolution flat-panel displays.
• Electro-Optic Devices: Used in the development of light shutters, spatial light modulators, and tunable filters due to its responsive birefringence.
• Advanced Material Research: Serves as a fundamental building block in academic and industrial R&D for studying mesophase behavior and developing new liquid crystal polymers (LCPs) and composites.
• Photonic Applications: Investigated for use in waveguide switches and other integrated photonic components where controlled light modulation is required.
• Temperature Sensors: Utilized in cholesteric mixtures for non-invasive temperature sensing and mapping applications based on color shifts.

Basic Information

Product Name	4-Octyl-4’-Cyanobiphenyl
CAS No.	121479-48-9
Molecular Formula	C21H25N
Molecular Weight	291.43 g/mol
Synonyms	4-Cyano-4'-octylbiphenyl; 4'-Octyl-4-biphenylcarbonitrile; 4-Octyl-4'-cyanobiphenyl; 8CB (4-Octyl-4'-cyanobiphenyl); Octylcyanobiphenyl; 4-Cyano-4'-octyl-1,1'-biphenyl; 4-n-Octyl-4'-cyanobiphenyl; K15 (historical/lab synonym)
EINECS	Contact for details

Quality Control

Our 4-Octyl-4’-Cyanobiphenyl is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity, critical for sensitive electro-optical applications. Each lot is analyzed using advanced chromatographic and spectroscopic techniques to verify identity, purity, and the absence of key impurities that could affect mesophase stability. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This material is light-sensitive (store away from light) and should be handled under an inert atmosphere when appropriate to prevent oxidation. Keep away from strong acids and strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 99.0%
Purity (GC)	≥ 99.5%
Melting Point	Contact for details
Clearing Point	Contact for details
Water Content (KF)	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.