Description

Styrylethyltrimethoxysilane is a specialized organosilicon coupling agent featuring a reactive styryl group and hydrolyzable methoxy functionalities. This unique structure makes it a critical component for enhancing the adhesion and compatibility between organic polymers and inorganic substrates. It is primarily sought after by manufacturers in the advanced composites, coatings, and sealants industries who require superior interfacial bonding and material performance.

Application

• As a coupling agent in fiberglass-reinforced plastics and composite materials to improve mechanical strength and moisture resistance.
• As a surface modifier for inorganic fillers (e.g., silica, glass) to promote dispersion and bonding within polymer matrices like epoxy, polyurethane, and acrylics.
• In the formulation of high-performance adhesives and sealants to enhance durability and environmental stability.
• As a key intermediate in the synthesis of specialty silicone resins and hybrid organic-inorganic materials.
• For the surface treatment of nanoparticles and pigments to improve their compatibility in coating systems.
• In the production of water-repellent coatings for construction and protective applications.

Basic Information

Product Name	Styrylethyltrimethoxysilane
CAS No.	134000-44-5
Molecular Formula	C13H20O3Si
Molecular Weight	252.38 g/mol
Synonyms	2-(4-Ethenylphenyl)ethyltrimethoxysilane; (2-(4-Vinylphenyl)ethyl)trimethoxysilane; 4-Vinylphenethyltrimethoxysilane; p-Styrylethyltrimethoxysilane; Silane, trimethoxy[2-(4-ethenylphenyl)ethyl]-; Silane coupling agent KH-590 (related trade name series); Styryl ethyl trimethoxy silane; Contact for details on EINECS

Quality Control

Our Styrylethyltrimethoxysilane is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including chromatographic purity analysis and functional group verification, to ensure it meets precise chemical and physical specifications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance with your technical requirements.

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, containers must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Clear colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 97.0%
Refractive Index (n20/D)	1.480 - 1.490
Density (20°C)	1.00 - 1.05 g/cm³

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