Diethylamine is widely used in the production of rubber chemicals, particularly as a precursor for vulcanization accelerators. It plays a key role in enhancing the durability and elasticity of rubber products, making it essential in the manufacturing of tires, hoses, and other rubber-based items. Additionally, it serves as an intermediate in the synthesis of various pharmaceuticals, including local anesthetics and antihistamines. In the agricultural sector, it is utilized in the formulation of herbicides and pesticides, helping to improve crop protection. Its solvent properties also make it valuable in organic synthesis and chemical processing industries.