Used as an analytical reagent for the detection and separation of metal ions, particularly in complexometric titrations. It forms stable, colored complexes with metals like aluminum, bismuth, and iron, making it useful in spectrophotometric analysis. Also employed in the synthesis of pharmaceuticals and agrochemicals as an intermediate. Its derivatives show potential in antimicrobial and antifungal applications due to their ability to disrupt metal homeostasis in pathogens. Additionally, it serves as a ligand in coordination chemistry for designing catalysts and functional materials.