1,2-Ethanediamine, N1-(3-(triethoxysilyl)propyl)-

N-(β-Aminoethyl)-γ-aminopropyltriethoxysilane (CAS 5089-72-5) is a diamine-functional silane coupling agent used to chemically bridge inorganic substrates and organic polymer matrices.

It promotes adhesion and surface compatibility at interfaces where bonding between dissimilar materials is otherwise poor. In glass fiber and mineral-filled composites, it treats filler surfaces to improve stress transfer.

This process directly impacts the mechanical performance of finished parts. Epoxy and polyurethane formulators use it as a crosslinking promoter and adhesion primer, particularly in structural adhesives.

It is also utilized in protective coatings for automotive and aerospace assemblies. Electronics manufacturers apply it as a surface primer on substrates before encapsulation or underfill processes.

This application improves moisture resistance and delamination resistance in PCB assemblies. In construction sealants and elastomeric systems, it functions as a crosslinker on glass, concrete, and metal.

The product is supplied as a liquid in standard packaging ranging from drums to IBC containers. Technical grade is the primary commercial form, with purity typically specified at 95% or higher.

Buyers should confirm silanol condensation inhibitors or stabilizer packages with suppliers. This is necessary when evaluating shelf life for storage-sensitive applications and long-term stability.