Description

n-Beta(Aminoethyl)-γ-Aminopropylmethylldimethoxysilane is a bifunctional organosilane coupling agent featuring both primary amine and methoxysilane groups. This dual functionality makes it a critical component for enhancing adhesion and compatibility between inorganic materials and organic polymers. It is essential for manufacturers in the composites, coatings, and sealants industries seeking to improve mechanical properties, durability, and moisture resistance in their final products.

Application

• As a coupling agent in fiberglass-reinforced plastics and mineral-filled composites to improve mechanical strength and wet-out.
• A key surface modifier and adhesion promoter in epoxy, polyurethane, and acrylic-based coatings for metals, glass, and concrete.
• Used in the formulation of sealants and adhesives to enhance bonding to difficult substrates and provide long-term durability.
• As a sizing agent for glass fibers and other reinforcing materials to improve resin compatibility and interfacial bonding.
• An intermediate in the synthesis of specialty silicon-based polymers and modified silicones for advanced material applications.
• Employed as a surface treatment for fillers and pigments (e.g., silica, clay) to improve dispersion and performance in polymer matrices.

Basic Information

Product Name	n-Beta(Aminoethyl)-γ-Aminopropylmethylldimethoxysilane
CAS No.	3069-72-5
Molecular Formula	C9H24N2O2Si
Molecular Weight	220.39 g/mol
Synonyms	N-[3-(Trimethoxysilyl)propyl]ethylenediamine; 3-(2-Aminoethylamino)propylmethyl dimethoxysilane; N-(2-Aminoethyl)-3-aminopropylmethyl dimethoxysilane; Aminoethylaminopropylmethyl dimethoxysilane; AEAPMDMS; Diamino functional silane; Dow Corning Z-6020 (analogous product); Silane A-2120 (analogous product)
EINECS	221-321-5

Quality Control

Our production of n-Beta(Aminoethyl)-γ-Aminopropylmethylldimethoxysilane adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including assay, purity, and functional group analysis, to ensure it meets precise chemical and performance specifications. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee traceability and compliance with your technical 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 product is hygroscopic (moisture-sensitive); containers must be kept tightly sealed to prevent contact with atmospheric moisture, which can lead to hydrolysis and polymerization.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC or Titration)	≥ 97.0%
Refractive Index (n20/D)	1.4430 - 1.4470
Density (g/mL, 25°C)	0.970 - 0.990
Amino Value	Contact for details

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