Used as a reagent in organic synthesis, particularly in esterification and oxidation reactions. Serves as a catalyst or intermediate in the production of pharmaceuticals, agrochemicals, and dyes. Employed in electroplating processes due to its ability to stabilize metal ions in solution. Also utilized in specialty cleaning formulations for removing rust and mineral deposits from metals and ceramics. Its potassium salt form enhances solubility and handling safety compared to free acid forms.