Polyepoxysuccinic acid

Polyepoxysuccinic acid (CAS 51274-37-4), also marketed as PESA, is a biodegradable polymeric chelating agent used in industrial water and process systems.

Where is Polyepoxysuccinic acid used?

• Cooling water and boiler systems: prevents calcium carbonate and calcium sulfate scale on heat transfer surfaces
• Oil and gas: produced water treatment and injection water conditioning for flow assurance
• Desalination and reverse osmosis: antiscalant that extends membrane service life
• It sequesters hardness ions to control scale deposition and inhibit corrosion.

Good to know: Its environmental profile makes it a substitute for phosphonate-based scale inhibitors in regions with strict phosphorus discharge limits.

Commercial specifications

• Aqueous solution, typically 40% active content
• Bulk supply in IBC totes and drums
• COA, MSDS and biodegradability test data