Description

4,4'-Bis(Dimethylhydroxysilyl)Diphenyl Ether is a specialized organosilicon compound featuring a central diphenyl ether bridge terminated with reactive hydroxysilyl groups. This unique bifunctional structure makes it a valuable key intermediate and cross-linking agent in advanced material synthesis. It is primarily sought by manufacturers in the silicone polymers, high-performance resins, and specialty coatings industries for developing materials with enhanced thermal stability, mechanical properties, and adhesion.

Application

• Silicone Polymer Modification: Acts as a chain extender or cross-linker to incorporate aromatic ether units into polysiloxane backbones, improving thermal and oxidative stability.
• High-Performance Resins: Used in the synthesis of polyimide-siloxane copolymers and other hybrid resins for electronics, aerospace, and automotive applications requiring high-temperature resistance.
• Adhesion Promoters: Serves as a coupling agent in coatings and sealants to enhance adhesion between organic polymers and inorganic substrates like glass or metals.
• Specialty Elastomers: Incorporated into silicone rubber formulations to modify physical properties such as tensile strength, elasticity, and chemical resistance.
• Optical and Electronic Materials: A precursor for materials used in LED encapsulation, optical waveguides, and other devices where stable, transparent silicones are needed.
• Pharmaceutical & Cosmetic Intermediates: Potential use in synthesizing siloxane-based carriers or delivery agents, subject to appropriate purity grades.

Basic Information

Product Name	4,4'-Bis(Dimethylhydroxysilyl)Diphenyl Ether
CAS No.	2096-54-0
Molecular Formula	C18H26O3Si2
Molecular Weight	346.57 g/mol
Synonyms	Bis[4-(dimethylhydroxysilyl)phenyl] Ether; 4,4'-(Oxybis(1,4-phenylene))bis(dimethylsilanol); 1,1'-[Oxybis(4,1-phenylene)]bis(1,1-dimethyldisilanol); Diphenyl Ether-4,4'-diylbis(dimethylsilanol); Dimethyl[4-(4-(dimethylhydroxysilyl)phenoxy)phenyl]silanol
EINECS	218-249-4

Quality Control

Our production of 4,4'-Bis(Dimethylhydroxysilyl)Diphenyl Ether adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and spectroscopic identification (IR, NMR), to ensure consistency and meet customer specifications. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting key parameters such as assay, moisture content, and impurity profiles.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%

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