Diethylamine is widely used in the production of rubber chemicals, where it acts as a catalyst in the vulcanization process, enhancing the durability and elasticity of rubber products. It is also utilized in the synthesis of pharmaceuticals, particularly in the manufacture of antihistamines and local anesthetics, where it serves as a key intermediate. In the agricultural sector, diethylamine is employed in the formulation of herbicides and pesticides, helping to control weeds and pests effectively. Additionally, it finds application in the production of corrosion inhibitors, which are essential in protecting metal surfaces in industrial settings. Its role as a solvent in various chemical reactions further underscores its versatility in organic synthesis.