Description

4-Cyclooctenyl Trimethoxysilane is a specialized organosilicon coupling agent featuring a reactive cyclooctenyl group and three hydrolyzable methoxy groups. This unique structure makes it a valuable intermediate for modifying surfaces and polymers, enhancing adhesion and compatibility between organic and inorganic materials. It is primarily utilized in advanced material science for developing high-performance coatings, adhesives, and composite materials in the electronics, aerospace, and specialty chemical industries.

Application

• Surface Modification Agent: Used to functionalize silica, glass, and metal oxide surfaces to improve the bonding of polymers and resins.
• Adhesion Promoter: Enhances the adhesion of sealants, adhesives, and coatings to various substrates, particularly in demanding environments.
• Polymer Crosslinking Agent: Serves as a crosslinker or co-monomer in the synthesis of silicone-based polymers and hybrid organic-inorganic materials.
• Composite Material Fabrication: Improves the dispersion and interfacial strength of fillers (e.g., silica, clay) in rubber and plastic composites.
• Chemical Intermediate: Acts as a key precursor for the synthesis of more complex silane derivatives and specialty chemicals.
• Electronic Encapsulants: Used in formulations for potting and encapsulating electronic components to provide moisture resistance and stability.

Basic Information

Product Name	4-Cyclooctenyl Trimethoxysilane
CAS No.	67592-37-4
Molecular Formula	C11H22O3Si
Molecular Weight	230.38 g/mol
Synonyms	Trimethoxy(4-cycloocten-1-yl)silane; (4-Cyclooctenyl)trimethoxysilane; 4-Cycloocten-1-yltrimethoxysilane; 1-Trimethoxysilyl-4-cyclooctene; Cyclooct-4-enyltrimethoxysilane; Silane, trimethoxy(4-cycloocten-1-yl)-; (4-Cyclooctenyl)trimethoxy silane
EINECS	Contact for details

Quality Control

Our 4-Cyclooctenyl Trimethoxysilane is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including GC, NMR, and FTIR, to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing purity, identity, and key physical properties are provided with every shipment and are available upon request.

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 material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Clear colorless to pale yellow liquid
Identification (IR)	Conforms
Purity (GC)	≥ 97.0%
Refractive Index (20°C)	1.450 - 1.460
Density (20°C)	0.98 - 1.02 g/mL

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