... 4.CAS NO.:181828-06-8 Sodium of Polyaspartic Acid (PASP)[CAS No.] 181828-06-8 Molecular formula: [C4H4NO3Na]xMolecular ... weight: 1000-5000 Properties:PASP(Sodium of Polyaspartic Acid) is a soluble polymer. It is ... and skin, once contacted, flush with water. Water treatment chemical PASP(Sodium of Polyaspartic Acid) is for corrosion inhibitor and antiscale