Potassium Phthalate is a high-purity organic potassium salt chemical with the molecular formula C8​H5​KO4​ (monopotassium) / C8​H4​K2​O4​ (dipotassium), appearing as white crystalline powder or colorless crystals. It features excellent water solubility, stable chemical properties under normal temperature and pressure, and low hygroscopy. Widely used as a chemical reagent, industrial intermediate, and additive in coating, plastic and textile industries, it has strict purity standards for different application grades and is a key fine organic chemical product in industrial synthesis.