Used as an intermediate in the synthesis of high-performance polymers, particularly in the production of sulfone-based engineering plastics. It plays a key role in polymerization reactions where it contributes to the formation of poly(arylene sulfone) chains, known for their thermal stability, mechanical strength, and resistance to hydrolysis. Also utilized in specialty chemical formulations for electroplating and as a modifier in polymer electrolytes due to its ionic conductivity and thermal resilience. Its reactivity makes it valuable in crosslinking agents and in the development of functional membranes for fuel cells and filtration systems.