Used in electrochemical sensors due to the redox-active ferrocene group, enabling detection of anions and biomolecules. Serves as a precursor in synthesizing ferrocene-based ionic liquids for catalysis and material science. Applied in bioorganometallic chemistry for developing redox-switchable drug delivery systems. Functions as a charge-balancing agent in modified electrodes and biosensors. Also utilized in studies of electron transfer mechanisms in aqueous and mixed solvent systems.