... be hydrolyzed, hard to be destroyed by acid or alkali, safety in use, no toxicity, no pollution. HPAA can improve zinc ... solubility. Its corrosion inhibition ability is 5-8 times better than that of HEDP and EDTMP. When ... . Storage for ten month in room shady and dry place.5,Safety Protection:Acidity, Avoid contact with eye and skin, once contacted ...