Description

Silphenylene CAS NO 41205-84-9 is a specialized organosilicon compound known for its unique silphenylene backbone structure, which imparts exceptional thermal stability and chemical resistance. This high-performance material is critical for applications demanding durability under extreme conditions, bridging the gap between organic polymers and inorganic silicones. It is primarily sought after by manufacturers in the advanced materials, electronics, and high-temperature polymer industries for creating next-generation composites, coatings, and sealants.

Application

• As a key monomer or additive in the synthesis of high-temperature resistant silphenylene-siloxane copolymers for aerospace and automotive components.
• In the formulation of advanced encapsulants and protective coatings- As a building block for heat-resistant adhesives and sealants used in industrial gasketing and engine assemblies.
  • For modifying thermoset resins (e.g., epoxies, polyimides) to enhance their thermal and mechanical properties.
  • In the research and development of novel membrane materials for gas separation and filtration at elevated temperatures.
  • As a precursor for ceramic and composite materials via pyrolysis (polymer-derived ceramics).

Basic Information

Product Name	Silphenylene
CAS No.	41205-84-9
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	1,4-Bis(dimethylsilyl)benzene; p-Bis(dimethylsilyl)benzene; Dimethylsilylbenzene; Benzene, 1,4-bis(dimethylsilyl)-; Silphenylene monomer; p-Phenylene bis(dimethylsilane); DMSB
EINECS	Contact for details

Quality Control

Our Silphenylene is manufactured under strict quality management protocols to ensure batch-to-batch consistency and high purity. All products undergo rigorous analytical testing, including chromatography and spectroscopy, to verify identity and assay. A comprehensive Certificate of Analysis (COA) detailing purity, moisture content, and other critical parameters is provided with each shipment to support your quality assurance processes.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0%
Moisture (KF)	≤ 0.5%

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