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2-Hydroxy Phosphonoacetic Acid (HPAA)

2-Hydroxy Phosphonoacetic Acid (HPAA)

Aliases: Phosphono Hydroxyacetic Acid, Hydroxyphosphonoacetic Acid, Hydroxyphosphine Acetic Acid, HPA

CAS No.: 23783-26-8

Molecular Formula: C2H5O6P

Relative Molecular Mass: 156

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Aliases: Phosphono Hydroxyacetic Acid, Hydroxyphosphonoacetic Acid, Hydroxyphosphine Acetic Acid, HPA

CAS No.: 23783-26-8

Molecular Formula: C2H5O6P

Relative Molecular Mass: 156

Structural Formula:

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1· Performance and Applications


HPAA has good chemical stability, is not easy to hydrolyze, and is not damaged by acid and alkali. The product is safe, reliable, non-toxic and pollution-free, can improve the solubility of zinc, has extremely strong corrosion inhibition effect, and its corrosion inhibition performance is higher than that of HEDP and EDTMP.

HPAA is mainly used as a cathodic corrosion inhibitor for metals; it is widely used in scale and corrosion inhibition of circulating cooling water systems in steel, petrochemical, electric power, pharmaceutical and other industries, and is suitable as a corrosion inhibitor for low hardness and corrosive water quality in southern China.


2· Technical Specifications


Compliant with HG/T 3926-2007 Compliant with HG/T 3926-2007
Item Index
Appearance Dark brown liquid
Solid Content % ≥50.0
Organic Phosphonic (as PO43-) % ≥25.0
Orthophosphoric Acid (as PO43-) % ≤1.5
Phosphorous Acid (as PO33-) % ≤3.0
Density (20℃) g/cm3 ≥1.3
pH Value (10g/L Aqueous Solution) ≤3.0




3· Usage Method


The organic corrosion and scale inhibitor composed of HPAA and low molecular weight polymers has excellent performance, and has a better effect when compounded with zinc salts.


4· Packaging and Storage


HPAA is packed in plastic drums, Standard capacities: 25kg, 250kg, 1250kg (IBC tank).Note: Packaging weight can be adjusted according to customer requirements. Store in a cool indoor place. The shelf life is twelve months.


5· Safety Protection


HPAA is an acidic liquid. Pay attention to labor protection during operation. Avoid contact with skin, eyes, etc. In case of contact, rinse immediately with plenty of clean water.

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Shandong Prio New Material Technology Co., Ltd. is located in Juye Chemical Industrial Park, Heze, Shandong Province. The company specializes in environmentally friendly water treatment agents, integrating R&D, production, sales, and technical services to deliver one-stop comprehensive water treatment solutions.

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