Used primarily as an intermediate in organic synthesis, especially in the production of pharmaceuticals, dyes, and stabilizers for polymers. It serves as a building block for ethyleneimine derivatives due to its reactivity with amines. Also employed in the preparation of quaternary ammonium compounds, which have applications in biocides and surfactants. Its ability to introduce bromine and hydroxyl functional groups makes it valuable in modifying molecular structures during drug development. Handle with care due to high toxicity and alkylating properties.