N,N',N''-Trimethyldiethylenetriamine is used as a curing agent in epoxy resins, enhancing their mechanical properties and thermal stability. It is also employed in the production of polyurethane foams, where it acts as a catalyst, improving the foam's density and elasticity. In the textile industry, it serves as a crosslinking agent for dyes, ensuring better color fastness. Additionally, it finds application in water treatment processes as a chelating agent, helping to remove metal ions from wastewater. Its role in the synthesis of surfactants and lubricants is notable, contributing to their stability and performance. Additionally, it is used in the rubber and plastics industries to improve physical properties such as flexibility and durability. It is also a component in coatings, enhancing adhesion and resistance to environmental conditions.