Description

n-Hexyltriethoxysilane is a versatile organosilicon coupling agent characterized by a reactive triethoxysilyl group and a hydrophobic hexyl chain. This dual functionality makes it an essential component for modifying material surfaces and enhancing the compatibility between organic polymers and inorganic substrates. It is primarily used by manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as in advanced composite materials and surface treatment technologies.

Application

• Surface Modification Agent: Imparts hydrophobic properties to glass, silica, and metal oxide surfaces for improved water repellency and corrosion resistance.
• Adhesion Promoter: Enhances the bonding strength and durability of coatings, adhesives, and sealants to challenging substrates like metals, glass, and minerals.
• Filler Treatment: Used to pretreat mineral fillers (e.g., silica, clay) in polymer composites to improve dispersion, reduce viscosity, and enhance mechanical properties.
• Crosslinking Agent: Functions as a co-monomer or crosslinker in silicone-based polymers and hybrid organic-inorganic materials (ORMOSILs).
• Rubber & Tire Industry: Improves the interaction between silica fillers and rubber matrices, leading to better rolling resistance, wear, and wet grip in tire formulations.
• Waterproofing Additive: Incorporated into construction materials, fabrics, and stone protectants to create durable water-repellent finishes.

Basic Information

Product Name	n-Hexyltriethoxysilane
CAS No.	18166-37-5
Molecular Formula	C12H28O3Si
Molecular Weight	248.44 g/mol
Synonyms	Hexyltriethoxysilane; Triethoxy(hexyl)silane; n-Hexyltriethoxysilane; 1-Hexyltriethoxysilane; Silane, hexyltriethoxy-; Triethoxyhexylsilane; Dynasylan® 3216; SIH6110.0; A 1160
EINECS	242-060-2

Quality Control

Our n-Hexyltriethoxysilane is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including gas chromatography (GC) for assay and purity verification. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming compliance with agreed specifications.

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) and highly volatile; containers must be kept tightly sealed and away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (20°C)	0.88 - 0.90 g/cm³
Refractive Index (n20D)	1.405 - 1.415

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