Used as a chelating agent in analytical chemistry for the extraction and determination of trace metals such as copper, nickel, and iron. It forms stable, water-insoluble complexes with many heavy metals, making it useful in solvent extraction and spectrophotometric analysis. Commonly employed in environmental testing to remove or quantify metal contaminants in water and soil samples. Also used as an accelerator in the vulcanization of rubber, improving the processing and curing of rubber products. Acts as a fungicide in agricultural formulations and in the preservation of wood and industrial coatings. Additionally, it serves as an antidote in cases of heavy metal poisoning by promoting the excretion of toxic metals through complexation.