Description

Liquid Crystal Mixture E7 is a well-established, commercially significant nematic liquid crystal mixture, widely recognized for its stable electro-optical properties. Its precise formulation is critical for achieving consistent performance in display technologies, where response time, threshold voltage, and operating temperature range are key parameters. This mixture is essential for manufacturers and R&D teams in the electronics, optoelectronics, and advanced materials sectors developing or producing liquid crystal displays (LCDs), optical shutters, and tunable photonic devices.

Application

• Twisted Nematic (TN) and Super Twisted Nematic (STN) Liquid Crystal Displays (LCDs): Serving as the core electro-optical medium in various display modules.
• Research & Development Reference Standard: Used as a benchmark material in academic and industrial labs for studying liquid crystal properties and testing new device architectures.
• Optical Modulators and Shutters: Employed in devices that control light intensity, phase, or polarization for laser systems and telecommunications.
• Tunable Lenses and Adaptive Optics: Key component in lenses where focal length can be electrically adjusted.
• Sensor Technology: Utilized in the development of temperature, pressure, or chemical sensors based on changes in optical properties.
• Guest-Host Display Systems: Acts as a host medium for dichroic dyes in specialized display applications.

Basic Information

Product Name	Liquid Crystal Mixture E7
CAS No.	63748-28-7
Molecular Formula	Mixture
Molecular Weight	N/A (Mixture)
Synonyms	E7 Liquid Crystal; Nematic Mixture E7; LCD Mixture E7; 4-Cyano-4'-pentylbiphenyl (5CB) Mixture; 4-Cyano-4'-heptylbiphenyl (7CB) Mixture; 4-Cyano-4'-octyloxybiphenyl (8OCB) Mixture; 4-Cyano-4'-pentyl-p-terphenyl (5CT) Mixture; Merck Licristal E7
EINECS	Contact for details

Quality Control

Every batch of Liquid Crystal Mixture E7 is manufactured and tested under strict quality management protocols to ensure it meets the exacting standards required for electro-optical applications. Our quality assurance includes rigorous analysis of composition, phase behavior, and key performance parameters. A comprehensive Certificate of Analysis (COA) detailing purity, nematic range, and physical constants is provided with each shipment to guarantee traceability and consistency for your production or research needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong acids and organic solvents. Ensure the container is kept upright to prevent leakage.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to standard
Nematic Range (Clearing Point)	≈ 60.5°C (Typical)
Refractive Index Anisotropy (δn)	≈ 0.225 (at 589 nm, 20°C)
Dielectric Anisotropy (δε)	≈ +14.5 (at 1 kHz, 20°C)
Rotational Viscosity (γ₁)	≈ 250 mPa·s (at 20°C)
Purity (HPLC)	> 99.5% (Total liquid crystal content)
Water Content (KF)	< 50 ppm

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