Polystyrene sulfonic acid CAS:28210-41-5

The material's acidic nature and ion-exchange capabilities make it valuable in various applications. It is widely used as a solid acid catalyst in organic synthesis, particularly in esterification, alkylation, and other reactions where a strong acid catalyst is required. Its high thermal stability and chemical resistance make it suitable for use in harsh reaction conditions. In the field of water treatment, polystyrene sulfonic acid-based ion-exchange resins are employed for the removal of heavy metal ions and other contaminants from water sources. These resins effectively exchange metal ions with hydrogen ions, enabling the purification of water in industrial and municipal settings. Furthermore, polystyrene sulfonic acid finds application in the production of proton exchange membranes (PEMs) for fuel cells. These membranes facilitate the transport of protons while blocking the passage of gases, making them essential components in proton exchange membrane fuel cells (PEMFCs) used for clean energy generation in automotive and stationary power applications. In the pharmaceutical industry, polystyrene sulfonic acid-based ion-exchange resins are utilized for drug purification and formulation, assisting in the removal of impurities and the controlled release of active pharmaceutical ingredients (APIs). Moreover, the material is employed in analytical chemistry for ion chromatography, where it serves as a stationary phase for the separation and analysis of ions in various samples. Overall, polystyrene sulfonic acid's strong acidic properties, ion-exchange capabilities, and thermal stability render it valuable in diverse applications, including organic synthesis, water treatment, fuel cell technology, pharmaceuticals, and analytical chemistry, making it a versatile material with significant contributions to various industries.