Used as a chelating agent in analytical chemistry to remove metal ions from solutions. Commonly employed in the extraction and purification of rare earth elements. Acts as a buffering agent in some pharmaceutical formulations. Found in cleaning solutions for removing rust and ink stains due to its ability to form soluble complexes with iron. Also used in the textile industry for mordanting dyes and in photography as part of developing solutions. In biomedical applications, it serves as an anticoagulant by binding calcium ions in blood samples.