... to be hydrolyzed, hard to be destroyed by acid or alkali, safety in use, no toxicity, ... acid(as PO33-)% ≤4.0pH(1% solution)1-3Density (20oC)g/cm3≥1.303,Application range&using method:HPAA is mainly used as ... metal cathode corrosion inhibitor. It can be widely used in the circulating ... room shady and dry place.5,Safety Protection:Acidity, Avoid contact with eye and skin, once ...