2,6-Diamino-3,5-diethyltoluene (DETDA) is a specialty chemical primarily used as a curing agent and chain extender in polyurethane and epoxy resin formulations. It offers low viscosity, fast curing, and excellent high-temperature resistance, making it ideal for applications in coatings, adhesives, sealants, elastomers, and composite materials. Additionally, it serves as an intermediate in the synthesis of performance polymers and other fine chemicals where thermal stability and mechanical properties are critical.