Description

(4-Ethenylphenyl) Trimethoxy-Silane is a specialized organosilicon coupling agent featuring a reactive vinylphenyl group and hydrolyzable methoxy silane functionalities. This unique molecular structure makes it a critical intermediate for creating covalent bonds between organic polymers and inorganic substrates. It is essential for manufacturers in the advanced materials sector seeking to enhance composite performance, adhesion, and surface modification. Key industries that utilize this compound include specialty polymers, high-performance coatings, and advanced glass or mineral fiber treatments.

Application

• Surface Modification Agent: Used to functionalize glass, silica, metals, and other inorganic surfaces to improve adhesion with organic resins in composite materials.
• Coupling Agent for Composites: Enhances the interfacial bonding and mechanical properties in fiberglass-reinforced plastics (FRP), mineral-filled polymers, and rubber compounds.
• Adhesion Promoter in Coatings: Incorporated into primers and adhesive formulations to promote bonding to difficult substrates like metals and treated plastics.
• Silicone Resin Intermediate: Serves as a key monomer or cross-linking agent in the synthesis of specialty silicone polymers and hybrid organic-inorganic materials.
• Nanomaterial Functionalization: Used to graft organic chains onto nanoparticles (e.g., silica, titania) to control dispersion and compatibility in polymer matrices.
• Waterproofing and Sealants: A component in formulations for moisture-curing sealants and waterproofing treatments where durable substrate adhesion is required.

Basic Information

Product Name	(4-Ethenylphenyl) Trimethoxy-Silane
CAS No.	18001-13-3
Molecular Formula	C11H16O3Si
Molecular Weight	224.33 g/mol
Synonyms	p-Vinylphenyltrimethoxysilane; 4-Vinylphenyltrimethoxysilane; (p-Vinylphenyl)trimethoxysilane; Trimethoxy(4-vinylphenyl)silane; Silane, trimethoxy(4-ethenylphenyl)-; 1-(Trimethoxysilyl)-4-ethenylbenzene; 4-Vinylphenyltrimethoxy Silane; VPS
EINECS	Contact for details

Quality Control

Our (4-Ethenylphenyl) Trimethoxy-Silane is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including Gas Chromatography (GC) and Nuclear Magnetic Resonance (NMR), to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and key specifications are provided with every shipment to support your quality assurance protocols.

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). Keep the container tightly sealed under a dry inert atmosphere (e.g., nitrogen or argon) to prevent hydrolysis and maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Density (20°C)	~1.02 g/cm³
Refractive Index (n20D)	~1.485

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