Description

3-Aminopropyldimethylethoxysilane is a bifunctional organosilicon compound featuring both an alkoxysilane group and a primary amine group. This unique structure makes it a highly effective coupling agent and surface modifier, crucial for enhancing adhesion and compatibility between organic polymers and inorganic substrates. It is essential for manufacturers in the coatings, adhesives, sealants, and elastomers (CASE) industries, as well as in advanced materials like composites and functionalized fillers.

Application

• Coupling Agent for Composites: Improves the interfacial bonding between glass, mineral, or carbon fiber reinforcements and polymer matrices (e.g., epoxy, polyamide), leading to superior mechanical strength and durability.
• Surface Priming & Adhesion Promotion: Used as a primer or additive in paints, inks, and adhesives to dramatically improve adhesion to difficult substrates like metals, glass, and plastics.
• Filler and Pigment Treatment: Modifies the surface of silica, clay, and other mineral fillers to enhance dispersion in polymer systems and reduce viscosity, improving processing and final product performance.
• Silicone Modification: Serves as a chain extender or crosslinker in silicone polymers, introducing reactive amine sites for further chemical modification or to alter material properties.
• Intermediate for Specialty Chemicals: Acts as a key synthetic building block for producing more complex silane derivatives, quaternary ammonium compounds, and other functional molecules.

Basic Information

Product Name	3-Aminopropyldimethylethoxysilane
CAS No.	18306-79-1
Molecular Formula	C7H19NO2Si
Molecular Weight	177.32 g/mol
Synonyms	Dimethyl(3-aminopropyl)ethoxysilane; N-(3-(Dimethylethoxysilyl)propyl)amine; 3-(Dimethylethoxysilyl)-1-propanamine; γ-Aminopropyldimethylethoxysilane; APDMES; Amino functional silane; AMMO (common industry abbreviation); (3-Aminopropyl)dimethylethoxysilane
EINECS	242-202-1

Quality Control

Our production of 3-Aminopropyldimethylethoxysilane adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including Gas Chromatography (GC) for purity and assay, Karl Fischer titration for moisture content, and refractive index measurement. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to ensure traceability and compliance with your 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). Due to its hygroscopic and highly volatile nature, containers must be kept tightly sealed after use to prevent moisture absorption and evaporation. Keep away from heat, sparks, and open flame.

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 (20°C)	0.88 - 0.92 g/mL
Water Content (Karl Fischer)	≤ 0.5%

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