HPAA
2-Hydroxyphosphonocarboxylic Acid
CAS No.: 23783-26-8
Other Name: HPA
Molecular Formula: C2H5O6P
Molecular Weight: 156
Properties:
HPAA is chemically stable. It is hard to hydrolyze, and hard to destroy by acid or alkali. It is safe to use with out toxicity or pollution. HPAA can improve zinc solubility. Its corrosion inhibition ability is 5-8 times better than that of HEDP and EDTMP. When built with low molecular polymers, its corrosion inhibition effects are even better.
| items | index |
| Appearance | Dark umber liquid |
| Solid content % | 50.0 min |
| Phosphorous acid(PO33-)% | 3.0 max |
| Density (20 ℃ )g/cm3 | 1.30 min |
| Phosphoric acid(PO43-)% | 1.5max |
| Organic phosphonic acid (PO43- )% | 25.0min |
| pH(1% solution) | 1.0-3.0 |
Usage:
HPAA is mainly used as cathode corrosion inhibitor in oilfield refill water system in fields such as steel & iron, petrochemical, power plant and medical industries. When built with zinc salt, the effect is even better.
Package and Storage:
Normally in 250kg net plastic drum, but IBC drum can also be used as required. Storage for one year in room shady and dry place.
Safety Protection:
HPAA is acidic. Avoid contact with eye and skin. In case of contact with eyes or skin, rinse immediately with plenty of clean water.
