HEDP | Etidronic Acid | hedp

Potassium dihydrogen phosphate (HEDP) is a scale inhibitor and corrosion inhibitor for boilers and heat exchangers, a complexing agent for cyanide-free electroplating, a chelating agent for soap, and a cleaning agent for metals and non-metals. As a water treatment agent, it has a stable structure and is not easily hydrolyzed. HEDP has a good corrosion inhibition effect and has a significant effect on iron ions. When the iron ion concentration is greater than 3 mg/L, its corrosion inhibition effect decreases with the increase of iron ion concentration. When used in combination with other corrosion inhibitors and scale inhibitors, HEDP has a synergistic effect and can improve the efficacy. The dosage is low. In the composite formula, a dosage of 2 to 5 mg/L is usually used.