Used primarily as an alkylating agent in organic synthesis, it introduces the tert-butyl group into various compounds. It is commonly employed in the production of pharmaceuticals, agrochemicals, and specialty chemicals. In research, it serves as a reagent for creating complex molecules and studying reaction mechanisms. Additionally, it is utilized in the preparation of polymers and as an intermediate in the synthesis of other organic compounds. Its reactivity makes it valuable in nucleophilic substitution reactions, particularly in the formation of carbon-carbon bonds.