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Sodium of Polyepoxysuccinic Acid (PESA) is a multivariate scale and corrosion inhibitor with non-phosphor and non-nitrogen.
  • PESA
  • ThFine
  • CAS No. 51274-37-4, 109578-44-1
  • Sodium of Polyepoxysuccinic Acid 

Sodium of Polyepoxysuccinic Acid (PESA)

CAS No. : 51274-37-4;109578-44-1

Molecular Formula:   HO(C4H2O5M2)nH                

Molecular weight:  400-1500

Structural Formula:




PESA is an environmentally friendly multi-scale scale corrosion inhibitor with non-phosphorus and non-nitrogen.

PESA has good scale inhibition and dispersibility for calcium carbonate, calcium sulfate, barium sulfate, calcium fluoride and silicon scale in water, and its effect is superior to ordinary organic phosphine scale inhibitor. Compound with phosphonate, PESA has a good synergistic effect.

PESA has a certain role in corrosion inhibition, it is also a multi-scale inhibitor.

PESA has a good biodegradable performance, and widely used in a range of fields, especially for the cooling water system in high alkali, high hardness and high pH conditions. It can be operated under high concentration index.

PESA has a good intermiscibility with chlorine compatibility, and has a good compatibility with other chemicals.





Colorless or amber transparent liquid

White powder

Solid content %

40.0 min

90.0 min

Density (20℃)g/cm3

1.30 min


pH(1% water solution)




PESA can be used in system of oilfield refill water, crude oil dehydration and boiler.

PESA can be used in circulating cool water system of steel, petrochemical, power plant, medicine.

PESA can be used in boiler water, circulating cool water, desalination plant, and membrane separation in situation of high alkaline, high hardness, high pH value and high concentration index.

PESA can be used in detergent fields.

Package and Storage:

PESA liquid: Normally in 200L HDPE drum, 1000L IBC, or customers’ requirement.

PESA solid: 25kg inner liner PE bag, 1000kg woven bag, or customers’ requirement.

Storage for ten months in shady room and dry place.


Safety Protection:

Alkaline, Avoid contact with eye and skin, once contacted, flush with water.


PESApolyepoxysuccinic acid; 

Polyepoxysuccinic Acid(PESA); 

epoxysuccinic acid homopolymer; 

Polyoxirane-2,3-Dicarboxylic Acid

2,3-oxiranedicarboxylic acid homopolymer; 

poly(1-oxacyclopropane-2,3-dicarboxylic acid)

Eco-friendly antiscalant and dispersant


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