Description General description Anhydrous phosphoric acid is a white solid which melts at 42.35oC to form a viscous liquid. In aqueous solution phosphoric acid behaves as a triprotic acid, having three ionizable hydrogen atoms. Application Industrially, phosphoric acid may be used in fertilizers, detergents, pharmaceuticals, water softeners. Packaging 25, 100 g in poly bottle Packaged in poly bottles Other Notes Concentrated phosphoric acid is approx. 85% H3PO4 (aqueous).