Terephthalic dihydrazide is widely used as a cross-linking agent in the production of polymers and resins. It enhances the thermal stability and mechanical properties of materials, making it valuable in the manufacturing of high-performance plastics and coatings. In the textile industry, it is employed to improve the durability and resistance of fibers. Additionally, it serves as a key intermediate in the synthesis of pharmaceuticals and agrochemicals, contributing to the development of various active compounds. Its application in adhesives and sealants also ensures strong bonding and long-lasting performance in industrial and consumer products.