Description

Acetoxyethyltriethoxysilane is a specialized organosilicon coupling agent that combines reactive ethoxysilane and acetoxyethyl functionalities. This unique structure makes it a highly effective adhesion promoter and surface modifier, bridging organic polymers and inorganic substrates. It is essential for manufacturers in the adhesives, sealants, coatings, and composite materials industries seeking to enhance product durability and performance.

Application

• Adhesion Promoter: Enhances the bond strength between organic polymers (e.g., acrylics, polyurethanes) and inorganic surfaces like glass, metals, and minerals in sealants and adhesives.
• Surface Modification: Used to treat fillers (silica, clay) and pigments to improve their dispersion and compatibility within polymer matrices.
• Crosslinking Agent: Functions as a moisture-curable crosslinker in silicone-modified polymers (MS Polymers) and room-temperature vulcanizing (RTV) silicone formulations.
• Fiberglass Sizing: A key component in sizing formulations for fiberglass reinforcements, improving the interfacial adhesion between the glass fibers and the resin in composites.
• Waterproofing Coatings: Imparts water repellency and improved weatherability to construction materials, stone, and concrete treatments.
• Primers: Serves as a base component in primer formulations for automotive, aerospace, and industrial coatings to ensure superior substrate wetting and adhesion.

Basic Information

Product Name	Acetoxyethyltriethoxysilane
CAS No.	22538-45-0
Molecular Formula	C10H22O5Si
Molecular Weight	250.37 g/mol
Synonyms	Triethoxy(2-acetoxyethyl)silane; 2-(Triethoxysilyl)ethyl acetate; Acetoxyethyltriethoxysilane; (2-Acetoxyethyl)triethoxysilane; Silane, triethoxy(2-acetoxyethyl)-; AETES; Dynasylan® 3211 (Evonik tradename); Silquest® A-1106 (Momentive tradename)
EINECS	Contact for details

Quality Control

Our Acetoxyethyltriethoxysilane is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including gas chromatography (GC), to ensure consistent purity and performance. Certificates of Analysis (COA) detailing key specifications are available upon request to support your quality assurance and regulatory compliance needs.

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 product is hygroscopic (moisture-sensitive). Keep the container tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent hydrolysis and maintain product integrity.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Density (20°C)	1.00 - 1.05 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.