Used as an alkylating agent in organic synthesis, particularly in the production of pharmaceuticals and agrochemicals. It facilitates the introduction of propyl groups into molecules, enhancing lipophilicity or altering biological activity. Employed in the preparation of surfactants and emulsifiers due to its ability to modify surface properties. Also utilized in research settings for esterification and sulfation reactions where a controlled sulfate donor is required. Due to its sensitivity to hydrolysis and potential to cause irritation, it should be handled with care and stored dry.