Used as a crosslinking agent in polymer chemistry, particularly in the synthesis of high-performance resins and thermosetting materials. Its dual bromomethyl groups enable efficient coupling reactions, making it valuable in the preparation of functional polymers for electronic encapsulation and composite materials. It also serves as a building block in the development of porous organic frameworks and dendritic structures due to its rigid aromatic backbone and reactivity toward nucleophilic substitution. Additionally, it finds use in the modification of polystyrene and other polymers to introduce reactive sites for further chemical functionalization.