Description

4,4'-Bis(Dimethylethoxysilyl)Biphenyl is a specialized organosilicon compound featuring a biphenyl core symmetrically functionalized with dimethylethoxysilyl groups. This molecular architecture makes it a valuable silane coupling agent and monomer for creating advanced polymeric materials with tailored properties. It is primarily utilized in industries requiring high-performance materials, such as electronics, advanced optics, and specialty coatings, where its ability to modify surfaces and act as a cross-linker is critical.

Application

• Advanced Polymer Synthesis: Key monomer for producing polysiloxanes, polyimides, and other high-temperature resistant polymers.
• Electronic Materials: Used in the formulation of dielectric layers, encapsulants, and adhesives for semiconductor and microelectronic devices.
• Optical Materials: Serves as a precursor for siloxane-based resins used in lenses, waveguides, and other optical components requiring precise refractive index control.
• Surface Modification: Acts as an adhesion promoter and surface treatment agent for glass, metals, and ceramics in composite materials.
• Specialty Coatings: Imparts hydrophobicity, chemical resistance, and thermal stability to protective and functional coatings.
• Liquid Crystal Alignment Layers: Potential use in the manufacture of liquid crystal displays (LCDs).
• Research & Development: Building block for novel organosilicon compounds and materials in academic and industrial R&D.

Basic Information

Product Name	4,4'-Bis(Dimethylethoxysilyl)Biphenyl
CAS No.	201603-69-2
Molecular Formula	C22H34O2Si2
Molecular Weight	386.68 g/mol
Synonyms	Biphenyl-4,4'-diylbis(dimethylethoxysilane); 4,4'-Bis(dimethylethoxysilyl)-1,1'-biphenyl; 1,1'-Biphenyl, 4,4'-bis(dimethylethoxysilyl)-; Dimethylethoxysilylbiphenyl; Bis(4-dimethylethoxysilylphenyl); Ethoxydimethylsilylbiphenyl; (4'-Ethoxydimethylsilyl-[1,1'-biphenyl]-4-yl)ethoxydimethylsilane
EINECS	Contact for details

Quality Control

Our production of 4,4'-Bis(Dimethylethoxysilyl)Biphenyl adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC, GC, NMR, and FTIR, to ensure identity, purity, and consistency. We provide detailed Certificates of Analysis (COA) with each shipment, documenting key specifications. Our quality system is designed to meet the exacting requirements of electronic and advanced material industries.

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). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC/HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.1%
Refractive Index (n20/D)	1.510 - 1.520
Density (g/mL at 20°C)	0.98 - 1.02

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