Description

(3-Aminopropyl)Ethyldiethoxysilane is a bifunctional organosilane coupling agent featuring both an amino group and hydrolyzable ethoxy groups. This unique structure makes it a critical component for enhancing adhesion and compatibility between inorganic materials and organic polymers. It is essential for manufacturers in the coatings, adhesives, and composites industries seeking to improve product durability and performance.

Application

• As a coupling agent in mineral-filled composites (e.g., fiberglass, silica) to improve mechanical strength and moisture resistance.
• A key surface modifier for silica, glass, and metal oxides to promote adhesion in coatings, inks, and adhesives.
• An intermediate in the synthesis of specialized silicone polymers and resins with amine functionality.
• Used in the formulation of primer solutions for automotive and industrial paints to enhance coating-substrate bonding.
• As an adhesion promoter in sealant and rubber formulations to improve performance under harsh environmental conditions.
• Employed in the production of modified silicas for chromatography and other separation technologies.

Basic Information

Product Name	(3-Aminopropyl)Ethyldiethoxysilane
CAS No.	20723-29-9
Molecular Formula	C9H23NO2Si
Molecular Weight	205.37 g/mol
Synonyms	3-Aminopropyl(ethyl)diethoxysilane; N-(3-(Diethoxyethylsilyl)propyl)amine; Ethyl[3-(aminopropyl)]diethoxysilane; Diethoxy(ethyl)(3-aminopropyl)silane; Aminoethyltriethoxysilane analog; APEDES; AEAPS; Amino-functional silane coupling agent
EINECS	Contact for details

Quality Control

Our (3-Aminopropyl)Ethyldiethoxysilane is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing to ensure consistent purity and performance, meeting the high standards required for industrial and specialty chemical applications. A Certificate of Analysis (COA) detailing key specifications is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms
Assay (GC)	≥ 97.0%
Refractive Index (n20/D)	1.420 - 1.425
Density (g/mL, 25°C)	0.920 - 0.935

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