Used as a chelating agent in analytical chemistry for the detection and quantification of metal ions. It forms stable complexes with various transition metals, enhancing sensitivity in spectrophotometric methods. Also employed in dye synthesis due to its ability to coordinate with metal centers, contributing to color development in pigments. Shows potential in corrosion inhibition by forming protective layers on metal surfaces. Investigated for use in catalytic processes where iron-based complexes promote oxidation reactions under mild conditions.