This cobalt salt hydrate of ethylenediaminetetraacetic acid (EDTA) is a specialty chelating agent used primarily in analytical and coordination chemistry. It functions as a reagent and standard in complexometric titrations to determine metal ion concentrations, leveraging the stable cobalt-EDTA complex. In water treatment, it sequesters heavy metals for purification, though its cobalt content limits broad applications. As a catalyst, it enhances efficiency in specific chemical reactions involving metal coordination. It is also incorporated into adhesives and coatings to improve durability by preventing metal-catalyzed degradation, and serves as a stabilizer in pharmaceutical and cosmetic formulations.