Description

n-[3-(Methoxydimethylsilyl)Propyl]Ethylenediamine is a bifunctional organosilicon compound featuring both a reactive silyl methoxy group and an ethylenediamine moiety. This unique structure makes it a highly effective coupling agent and adhesion promoter, bridging inorganic materials and organic polymers. It is essential for manufacturers in the coatings, adhesives, and composites industries seeking to enhance material performance, durability, and interfacial bonding. Its versatility also extends to serving as a key intermediate in the synthesis of specialized silicone polymers and surface modifiers.

Application

• Adhesion Promoter: Significantly improves the bond strength between inorganic substrates (glass, metals, minerals) and organic polymers (epoxies, polyurethanes, acrylics) in coatings, sealants, and adhesives.
• Surface Modification Agent: Used to functionalize silica, glass fibers, and other fillers to enhance their compatibility and dispersion within plastic and rubber matrices, improving mechanical properties.
• Crosslinking Agent & Intermediate: Serves as a building block in the synthesis of advanced silicone-organic hybrid polymers, resins, and tailored silane coupling agents.
• Fiberglass & Composite Treatment: Applied as a sizing or finishing agent on glass fibers to improve resin wettability and interfacial adhesion in reinforced plastics (FRP) and composite materials.
• Mineral Filler Treatment: Treats calcium carbonate, talc, and other mineral fillers used in plastics to reduce viscosity, improve processing, and increase composite strength.
• Primer Formulation: A key component in primer formulations for automotive, aerospace, and construction applications where long-term durability and corrosion resistance are critical.

Basic Information

Product Name	n-[3-(Methoxydimethylsilyl)Propyl]Ethylenediamine
CAS No.	3069-33-8
Molecular Formula	C8H22N2O2Si
Molecular Weight	206.36 g/mol
Synonyms	N-[3-(Dimethoxymethylsilyl)propyl]ethylenediamine; (3-(2-Aminoethylamino)propyl)dimethoxymethylsilane; N-(3-(Dimethoxymethylsilyl)propyl)ethane-1,2-diamine; 3-[(2-Aminoethyl)amino]propyldimethoxymethylsilane; Aminoethylaminopropylmethyldimethoxysilane; DAMO; Silane AY 43-031; A 2120 (Momentive); Dynasylan 1411 (Evonik)
EINECS	221-324-0

Quality Control

Our production of n-[3-(Methoxydimethylsilyl)Propyl]Ethylenediamine adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including assay, identity confirmation, and impurity profiling, to ensure consistency and high purity. Certificates of Analysis (COA) detailing all relevant specifications are provided and available upon request, supporting 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 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)	1.4430 - 1.4470
Density (g/mL, 25°C)	0.940 - 0.960

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