Used as a crosslinking agent in polymer chemistry, particularly in the synthesis of high-performance thermosetting resins. Its multiple bromomethyl groups readily react with nucleophiles, enabling efficient network formation in epoxy and phenolic resin systems. It is also employed in the preparation of flame-retardant materials due to the bromine content, which imparts fire resistance. Additionally, it serves as a building block in the construction of dendrimers and other branched macromolecular structures.