3-(2-Aminoethylamino)propyltrimethoxysilane is a colorless to pale yellow liquid used as an adhesion promoter, surface modifier, coupling agent, surface treatment agent, and textile treatment chemical. It enhances adhesion between organic and inorganic materials, improves wetting and dispersing properties, and provides reactive surface functionality. With its versatile applications, it finds use in adhesives, coatings, composites, electronics, fiber-reinforced plastics, glass, rubber, textiles, and more.