Description

5-Hexenyltrimethoxysilane is a bifunctional organosilicon compound featuring a reactive terminal alkene group and three hydrolyzable methoxy groups. This unique structure makes it a highly effective coupling agent and surface modifier, bridging organic polymers with inorganic substrates. It is essential for manufacturers in the adhesives, sealants, coatings, and advanced composite materials industries seeking to enhance material compatibility, adhesion, and durability.

Application

• Coupling Agent for Composites: Improves the interfacial adhesion between inorganic fillers (e.g., glass, minerals) and organic polymer matrices like polyolefins, epoxies, and polyurethanes.
• Surface Primers & Adhesion Promoters: Used to pretreat glass, metal, or mineral surfaces to significantly enhance the bonding strength and water resistance of subsequently applied coatings, inks, and adhesives.
• Crosslinking & Curing Agent: The alkene group allows for co-polymerization or hydrosilylation reactions, enabling its use in silicone modification and the synthesis of crosslinked polymer networks.
• Silicone Functionalization: Serves as a key intermediate for synthesizing custom silicone oils, resins, and elastomers with pendant reactive groups for further chemical modification.
• Filler Treatment: Imparts organophilic characteristics to hydrophilic fillers like silica, improving their dispersion and compatibility in non-polar polymer systems.
• Waterproofing Agent: Used in formulations for stone, concrete, and textile treatments to create hydrophobic, protective surfaces.

Basic Information

Product Name	5-Hexenyltrimethoxysilane
CAS No.	58751-56-7
Molecular Formula	C9H20O3Si
Molecular Weight	204.34 g/mol
Synonyms	5-Hexen-1-yltrimethoxysilane; (5-Hexenyl)trimethoxysilane; Trimethoxy(5-hexenyl)silane; 5-Hexenyltrimethoxy silane; Allylbutyltrimethoxysilane; Vinyl functional silane; Unsaturated organoalkoxysilane; Silane coupling agent Z-6300 (Trade Name Analog)
EINECS	Contact for details

Quality Control

Our production of 5-Hexenyltrimethoxysilane adheres to strict quality management protocols. Every batch undergoes rigorous analytical testing, including GC, NMR, and FTIR, to ensure consistent purity, identity, and performance. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical properties is provided with each shipment to guarantee it meets your specific application 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). This material is hygroscopic (moisture-sensitive); containers must be kept tightly sealed and under a dry inert atmosphere (e.g., nitrogen) for long-term storage to prevent hydrolysis and maintain optimal reactivity.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (20°C)	0.89 - 0.91 g/mL
Refractive Index (n20D)	1.410 - 1.415
Moisture (Karl Fischer)	≤ 0.5%

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