Used primarily as an alkylating agent in organic synthesis, it introduces the sec-butyl group into various molecules. It is employed in the production of pharmaceuticals, agrochemicals, and other organic compounds. In research, it serves as a reagent for studying reaction mechanisms and developing new synthetic pathways. Additionally, it can be utilized in the preparation of intermediates for fragrances and flavors. Its role in industrial applications includes modifying polymers and creating specialty chemicals. Proper handling is essential due to its reactivity and potential hazards.