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Hexyltrimethoxysilane

Updated: 2026-07-25

Overview

Hexyltrimethoxysilane is an organosilicon compound commonly used as a coupling agent in various industrial applications. It features a hexyl group attached to a trimethoxysilane moiety, which allows it to form stable bonds with both organic and inorganic materials. This compound is particularly valued in the coatings and adhesives industries for its ability to enhance adhesion and durability. Its versatility makes it a critical component in formulations where strong bonding between dissimilar materials is required.

Physical and Chemical Properties

九氟己基三甲氧基硅烷 全氟丁基乙基三甲氧基硅烷 CAS:85877-79-8曲阜易顺化工有限公司

Hexyltrimethoxysilane is a colorless to pale yellow liquid with a molecular weight of 206.36 g/mol. It has a density of approximately 0.92 g/cm³ and a boiling point range of 185-190°C. The compound is soluble in common organic solvents such as ethanol and acetone. One of its key chemical properties is its ability to hydrolyze in the presence of moisture, forming silanols that can subsequently bond with inorganic surfaces like glass, metals, and minerals. This reactivity makes it highly effective as a coupling agent.

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Main Applications

Hexyltrimethoxysilane is primarily used as a coupling agent in coatings, adhesives, and sealants. It improves the adhesion of organic polymers to inorganic substrates, enhancing the durability and performance of the final product. In addition, it finds applications in the modification of silica-based materials and as a surface treatment agent for fillers and pigments. Its ability to promote interfacial bonding makes it indispensable in industries ranging from construction to automotive manufacturing.

Safety and Storage

九氟己基三甲氧基硅烷 85877-79-8 含量99% 化工试剂 可分装湖北阡陌生物科技有限公司

Hexyltrimethoxysilane should be handled with care to avoid skin and eye contact. It is advisable to use personal protective equipment, including gloves and goggles, when working with this chemical. Adequate ventilation is essential to prevent inhalation of vapors. Storage conditions should be cool and dry, away from moisture and direct sunlight. Containers must be tightly sealed to prevent hydrolysis, which could compromise the compound's effectiveness.

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B2B Procurement Guide

When procuring hexyltrimethoxysilane, buyers should verify the CAS number (3069-21-4) and purity specifications to ensure product quality. Bulk orders often qualify for discounts, making it cost-effective for large-scale industrial use. It is also advisable to source from reputable suppliers who provide detailed technical data sheets and safety information. Buyers should consider storage and handling requirements to maintain the compound's stability during transit and use.

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