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Partial stabilization of ortho-phosphate (in WSC^® 8170 DP with hexyl-ethyl alcohol) creates special class of film formers, which combines the advantages of dibasic acids to the advantages of phosphates.

Dibasic acids work because of their limited solubility with transition metals (iron copper) and alkaline earth cations (hardness). As the corrosion process takes place at the anode, iron ions go into solution.

The dibasic anion reacts with the iron ions and precipitates at the corrosion site, stopping corrosion.

ATTENTION: Even using Phosphate stabilizer, the tendency of Tri-calcium phosphate deposition is very high. So, NEVER use stabilized phosphate treatments in Cooling Towers, when Total Hardness in Make Up exceeds 50-60 ppm as CaCO3.

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