Description

n-Hexyltrimethoxysilane is a versatile organosilicon coupling agent characterized by its reactive methoxysilyl group and a hydrophobic hexyl chain. This compound is essential for modifying material surfaces and interfaces, enhancing adhesion, compatibility, and water repellency in composite systems. It is a critical raw material for manufacturers in the coatings, sealants, plastics, and advanced materials industries seeking to improve product performance and durability.

Application

• As a coupling agent and adhesion promoter in mineral-filled composites and fiberglass-reinforced plastics.
• Surface treatment for inorganic fillers (e.g., silica, clay) to improve dispersion and compatibility in polymer matrices.
• Hydrophobic modification agent for coatings, sealants, and construction materials to impart water repellency.
• Key intermediate in the synthesis of specialty silicone resins and modified silanes for advanced material applications.
• Primer or additive in adhesive formulations to enhance bonding to difficult substrates.
• Surface functionalization of nanoparticles for use in nanocomposites and electronic materials.

Basic Information

Product Name	n-Hexyltrimethoxysilane
CAS No.	3069-19-0
Molecular Formula	C9H22O3Si
Molecular Weight	206.36 g/mol
Synonyms	Hexyltrimethoxysilane; 1-Hexyltrimethoxysilane; Trimethoxy(hexyl)silane; n-Hexyltrimethoxy silane; Silane, hexyltrimethoxy-; n-Hexyl-trimethoxysilan; Hexyltrimethoxysilan; (n-Hexyl)trimethoxysilane
EINECS	221-317-5

Quality Control

Our n-Hexyltrimethoxysilane is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including gas chromatography (GC) for purity and identity verification, to ensure it meets precise specifications and consistent performance. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance with your quality 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 to prevent contact with atmospheric moisture, which can lead to hydrolysis and reduced efficacy.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Density (20°C)	0.88 - 0.90 g/cm³
Refractive Index (n20/D)	1.405 - 1.415

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