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HPAA

HPAA（Hydroxyphosphono-acetic acid）is an excellent corrosion inhibitor and preservative. It performs particularly well in water with low hardness, low alkalinity, and high corrosivity.


Applications

FAQs about Water Treatment Chemicals

Product Tags

Molecular Formula C2H5O6P
CAS No. 23783-26-8
Appearance Dark brown liquid
Solid content, % 50.0 min
pH (1% aqueous solution) 1.0–3.0
Solid content, % 50.0 min
Total Phosphonic Acid (as PO₄³⁻), % 25.0 min
Phosphoric Acid (as PO₄³⁻), % 1.50 max
Density (20°C), g/cm³ 1.30 min

Properties:

● Chemically stable, resistant to hydrolysis and degradation by acids and alkalis; safe to use, non-toxic, and non-polluting.

● It is highly soluble in water and enhances the solubility of zinc.

● Its preservative efficacy is 5–8 times that of HEDP and EDTMP.

● In some cases, HPAA can even replace molybdate salts and their derivatives. Due to its high efficiency even at low concentrations, HPAA is typically used at concentrations in the ppm range.

● Its effectiveness is further enhanced when used in combination with zinc salts or polymers.

Applications:

It is primarily used as a cathodic corrosion inhibitor in steel, petrochemical, power plant, and medical industries, as well as in oilfield reinjection water systems. It is even more effective when formulated with zinc salts.

As a corrosion inhibitor, it is primarily used in cooling water/industrial water systems in oilfields, petrochemical plants, and power plants, as well as in the surface treatment of steel.

Packaging

200-liter plastic drums, 1,000-liter IBC containers, or as per customer requirements.

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Storage:

Store in a cool, dry place.

Synonyms：

HPA;

Hydroxyphosphono-Acetic Acid;

Phosphonoglycolic Acid;

Belcor 575;

Multicor 75;

Mayoquest 1750;

Unisperse 175;

Heparanase-1;

Snailagglutinin;

ANTI-HEPARANASE (N-TERM) antibody produced in rabbit;

Endo-glucuronidase;

Heparanase [Precursor]; Snailagglutinin;

HPSE;

Hydroxyphosphonoacetic Acid – 50% in water.

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