Used as a chelating agent in analytical chemistry to detect and quantify metal ions, particularly iron and aluminum, due to its ability to form stable complexes. It is also employed in the synthesis of dyes and pigments, where it acts as an intermediate. In the pharmaceutical industry, it serves as a precursor for the production of antimicrobial and antifungal agents. Additionally, it is utilized in water treatment processes to remove heavy metals by forming insoluble complexes. Its applications extend to the field of photography, where it is used in developing solutions to enhance image quality.