Used primarily as an alkylating agent in organic synthesis, this compound serves in the preparation of intermediates for pharmaceuticals and agrochemicals. Its reactivity allows for the introduction of sulfonate ester groups, facilitating substitution or elimination reactions. Due to its alkylating properties, it has been explored in research settings for modifying biomolecules, though its use is limited by toxicity and stability concerns. It may also find application in polymer chemistry as a cross-linking or chain-transfer agent. Handling requires caution due to potential carcinogenicity and reactivity with nucleophiles.