Diphenyl sulfone is widely used as a high-temperature solvent in the production of polyethersulfone (PES) and polysulfone polymers, which are essential in manufacturing high-performance engineering plastics. These plastics are utilized in various industries, including automotive, aerospace, and electronics, due to their excellent thermal stability, mechanical strength, and chemical resistance. Additionally, diphenyl sulfone serves as an intermediate in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. Its stability under harsh conditions makes it suitable for use in high-temperature reactions and as a heat transfer fluid in industrial processes. Furthermore, it is employed in the synthesis of dyes and pigments, contributing to the vibrant colors in textiles and coatings.