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2-Hydroxy Phosphonoacetic Acid
HPAA
CAS No. 23783-26-8
Molecular Formula: C2H5O6P
Molecular weight: 156
Synonyms: Hydroxyphosphono-acetic Acid
Structural Formula:
Properties:
HPAA is chemically stable, hard to 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 built with low molecular polymers, its
corrosion inhibition effect is even better.
Specification:
Items Index
Appearance Dark umber liquid
Solid content % 50.0 min
Total phosphonic acid(as PO43-)% 25.0 min
Phosphoric acid (as PO43- )% 1.5 max
Density (20℃) g/cm3 1.30 min
pH(1% water solution) 3.0 max
Usage:
HPAA is mainly used as cathode corrosion inhibitor in oilfield refill water system in fields such as
steel & iron, petrochemcal, power plant and medical industries. When built with zinc salt, the
effect is even better.
Package and Storage:
200L plastic drum,IBC(1000L),customers’ requirement.
Storage for one year in shady room and dry place.
