Disodium dimercaptomaleonitrile is primarily used in the field of analytical chemistry as a chelating agent. It effectively binds with metal ions, making it useful for the detection and quantification of various metals in environmental and industrial samples. This compound is particularly valued for its ability to form stable complexes with heavy metals, aiding in their removal from solutions and reducing their environmental impact. Additionally, it finds application in research laboratories for studying metal-ligand interactions, contributing to advancements in coordination chemistry and material science.