Sodium of Polyepoxysuccinic Acid (PESA) is a high-performance, multivariate scale and corrosion inhibitor engineered for demanding industrial water treatment environments. Distinguished by its non-phosphorous and non-nitrogenous composition, PESA provides superior inhibition and dispersion for calcium carbonate, calcium sulfate, calcium fluoride, and silica scale, outperforming conventional organophosphines in efficiency and environmental compatibility.
Designed for versatility, PESA exhibits exceptional stability in high-alkalinity, high-hardness, and high-pH systems. Its biodegradable nature makes it an eco-friendly choice for sustainable industrial operations. Whether used independently or synergistically with organophosphates and chlorine, PESA ensures optimal system efficiency across oilfields, power plants, and chemical manufacturing sectors.
Detailed Parameters
| CAS No. | 51274-37-4; 109578-44-1 | Molecular Formula | HO(C4H2O5M2)nH |
|---|---|---|---|
| Molecular Weight | 400-1500 | Appearance (Liquid) | Colorless or amber transparent liquid |
| Appearance (Solid) | White powder | Solid Content (Liquid) | 40.0% min |
| Solid Content (Powder) | 90.0% min | Density (20℃) | 1.30 g/cm3 min |
| pH (1% solution) | 10.0-12.0 | Biodegradability | Excellent / Biodegradable |
Key Advantages
Superior Scale Inhibition
Highly effective against CaCO3, CaSO4, CaF2, and silica scale, surpassing ordinary organophosphines.
Eco-Friendly Profile
Non-phosphorous, non-nitrogenous, and fully biodegradable, reducing environmental footprint.
Extreme pH Stability
Operates efficiently in high-alkaline, high-hardness, and high-pH water conditions.
Strong Synergism
Works synergistically with chlorine and organophosphates to enhance corrosion protection.
High Concentration Index
Capable of operating under high concentration indices without losing effectiveness.
Wide Application
Versatile use in boilers, cooling systems, desalination, and detergent manufacturing.
Product Gallery
Management Platforms
Flexible Packaging
Available in 200L drums, 1000L IBC tanks, or 20kg bags to suit your logistics.
Industrial Integration
Seamlessly integrates into petrochemical, power plant, and steel mill water systems.
Quality Assurance
Strict specification control for both liquid and powder forms to ensure consistency.
Safety Management
Alkaline-grade safety protocols provided to ensure worker protection during handling.
Storage Optimization
10-month shelf life when stored in shady, dry environments for lean inventory.
Technical Support
Expert guidance on dosage for membrane separation and desalination plants.
Investment Return Comparison
| Performance Metric | Standard Phosphonates | PESA Solution |
|---|---|---|
| Environmental Impact | Moderate (Phosphorous) | Low (Biodegradable) |
| High pH Stability | Limited | Excellent |
| Silica Scale Control | Standard | Superior |
| Synergistic Effect | Baseline | Enhanced with Chlorine |
| System Lifespan | Standard | Extended (Reduced Scaling) |
Frequently Asked Questions
PESA is non-phosphorous and non-nitrogenous, making it more environmentally friendly and biodegradable. It also demonstrates superior scale inhibition for silica and calcium salts, especially in high-pH environments.
It is widely utilized in the petrochemical, power generation, steel manufacturing, pharmaceutical industries, and in oilfield refill water and desalination plants.
Yes, PESA has excellent synergistic effects when combined with chlorine and other organophosphates, enhancing the overall corrosion and scale inhibition performance.
PESA should be stored in a shady and dry room. Under these conditions, it remains stable for up to ten months.
Since PESA is alkaline, labor protection is essential. Avoid contact with eyes, skin, and clothing. In case of contact, rinse immediately with plenty of water.
Yes, PESA is highly effective for membrane separation, particularly in scenarios involving high alkalinity, high hardness, and high concentration indices.




