HEDP (1-Hydroxyethylidene-1,1-Diphosphonic Acid) corrosion inhibitors are generally not highly soluble in alcohols. HEDP is most commonly soluble in water and has good solubility in other polar solvents like glycols and amines.
Alcohols, on the other hand, have limited solubility with HEDP due to differences in their polarity and molecular interactions. While some low molecular weight alcohols like methanol and ethanol may exhibit partial solubility with HEDP, higher molecular weight alcohols such as propanol or butanol may have even lower solubility due to increased hydrophobicity.
It’s important to note that the solubility of HEDP can vary depending on factors such as temperature, pH, and concentration.
HEDP is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn ions to form stable chelating compounds.It can dissolve the oxidized materials on these metals’ surfaces. HEDP shows excellent scale and corrosion inhibition effects under temperature 250℃. HEDP has good chemical stability under high pH value, hard to be hydrolyzed, and hard to be decomposed under ordinary light and heat conditions. Its acid/alkali and chlorine oxidation tolerance are better than that of other organophosphoric acids (salt). HEDP can react with metal ions in water system to form hexa-element chelating complex, with calcium ion in particular. Therefore, HEDP has good antiscale and visible threshold effects. When built together with other water treatment chemicals, it shows good synergistic effects.