What is Polyepoxysuccinic Acid (PESA) CAS 51274-37-4?

PESA is a phosphorus-free, non-nitrogen organic polymer used as a scale inhibitor and dispersant. It is selected for cooling-water, boiler-water, desalination and process-water programmes where deposition control is required.

Is PESA the same as a phosphonate?

No. PESA is a polymeric epoxysuccinic-acid product rather than a phosphonate. It is often used in phosphorus-restricted formulations and may be combined with phosphonates or other polymers when the treatment programme supports it.

Which types of scale can PESA help control?

PESA is used against calcium carbonate, calcium sulfate, barium sulfate, strontium sulfate, calcium fluoride and silica scale. Its suitability still depends on water chemistry, temperature, concentration cycles and the other treatment chemicals present.

Where is PESA most commonly applied?

It is commonly used in circulating cooling-water systems, boiler-water programmes, seawater desalination, oilfield water treatment and process-water dispersant blends. It is especially relevant for high-hardness, high-alkalinity or high-pH systems.

What information is needed to select a PESA grade?

Confirm the system type, make-up-water analysis, operating temperature, concentration cycles, deposition concern and companion treatment chemistry. These inputs determine whether PESA is used alone or in a broader scale-inhibitor and dispersant programme.

Polyepoxysuccinic Acid (PESA) CAS 51274-37-4

Polyepoxysuccinic acid (PESA), CAS 51274-37-4, is a phosphorus-free polymeric scale inhibitor for cooling-water, boiler-water and process-water formulations. Grades are specified by active content and formulation compatibility, with COA, TDS and SDS for the agreed product.

CAS: 51274-37-4
Synonyms: Polyepoxysuccinic acid; PESA; Poly(epoxysuccinic acid)
Einecs: Not specified (polymeric product)
Molecular Formula: Not specified (polymeric scale inhibitor)
Grade: Industrial water-treatment grade; active content and formulation compatibility to be confirmed
Package: HDPE drums or IBCs for aqueous grades; pack and labelling selected for destination requirements
Appearance: Aqueous polymer solution; confirm batch appearance
Product family: Phosphorus-free polymeric scale-control ingredient
Active content: Confirmed against the agreed commercial grade
Primary selection inputs: Hardness, alkalinity, iron, pH, temperature and concentration cycles
Compatibility: Confirm with the complete water-treatment formulation

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Product Description

Polyepoxysuccinic acid (PESA) is a polymeric scale-control ingredient used in cooling-water, boiler-water and process-water formulations. It is commonly selected where a phosphorus-free dispersant or scale inhibitor is required, but performance depends on calcium hardness, alkalinity, iron, temperature, concentration cycles and the companion chemistry in the programme.

1 Applications

2 Specification points

3 Documentation and handling

Applications

Cooling-water formulations designed to manage mineral deposition and suspended solids.
Boiler and process-water programmes where an organic polymeric dispersant is specified.
Phosphorus-restricted treatment blends, subject to site water analysis and discharge requirements.
Combination formulations with phosphonates or other polymers when compatibility has been checked.

Specification points

Confirm the active-content basis, pH, density, appearance, water-solubility behaviour and intended blend partners. Existing programmes that use HEDP or HPMA should be compared by site performance rather than assumed to be directly interchangeable.

Documentation and handling

COA review should focus on active content and physical consistency. Storage conditions, compatibility and final dose setting belong to the programme SDS/TDS and the operating water analysis.

FAQ - Technical & Supply Chain

Q:
What is Polyepoxysuccinic Acid (PESA) CAS 51274-37-4?

A: PESA is a phosphorus-free, non-nitrogen organic polymer used as a scale inhibitor and dispersant. It is selected for cooling-water, boiler-water, desalination and process-water programmes where deposition control is required.
Q:
Is PESA the same as a phosphonate?

A: No. PESA is a polymeric epoxysuccinic-acid product rather than a phosphonate. It is often used in phosphorus-restricted formulations and may be combined with phosphonates or other polymers when the treatment programme supports it.
Q:
Which types of scale can PESA help control?

A: PESA is used against calcium carbonate, calcium sulfate, barium sulfate, strontium sulfate, calcium fluoride and silica scale. Its suitability still depends on water chemistry, temperature, concentration cycles and the other treatment chemicals present.
Q:
Where is PESA most commonly applied?

A: It is commonly used in circulating cooling-water systems, boiler-water programmes, seawater desalination, oilfield water treatment and process-water dispersant blends. It is especially relevant for high-hardness, high-alkalinity or high-pH systems.
Q:
What information is needed to select a PESA grade?

A: Confirm the system type, make-up-water analysis, operating temperature, concentration cycles, deposition concern and companion treatment chemistry. These inputs determine whether PESA is used alone or in a broader scale-inhibitor and dispersant programme.

Ordering & Documentation

Key information for document requests, quotations, and supply planning.

Documents

COA, TDS, SDS/MSDS and packing details are available on request.

Quotation

Send the CAS number, grade, quantity, packing preference and destination.

Sample & Supply

Support is available for samples, trial orders, bulk and repeat supply.

Storage & Shipping

Product-specific conditions are confirmed before order.

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