Used primarily as an alkylating agent in organic synthesis, particularly in the preparation of fluorinated compounds for pharmaceutical and agrochemical research. Its reactivity allows for the introduction of a fluoroethyl group into target molecules, which can enhance metabolic stability and bioavailability in drug candidates. Commonly employed in the synthesis of radiolabeled compounds for positron emission tomography (PET) imaging due to the presence of fluorine, facilitating tracer development. Also utilized in the formation of functionalized polymers and as an intermediate in the production of specialty chemicals requiring selective fluorination.