Used primarily as a crosslinking agent in polymer chemistry, especially in the synthesis of high-performance thermosetting resins. It enables the formation of ether linkages between aromatic rings, enhancing thermal stability and mechanical strength of the resulting polymers. Commonly applied in the production of flame-retardant materials due to the presence of bromine atoms, which impart intrinsic fire resistance. Also utilized in the preparation of specialty epoxy resins and as a building block in the development of advanced composites for electronics and aerospace industries. Its bifunctional reactivity allows for controlled network formation in curing processes, making it valuable in coatings, adhesives, and encapsulants requiring durability and chemical resistance.