Phosphino carboxylic acid (PCA) associates characteristics of phosphonates as well as polyacrylates. The function is to provide a special equilibrium of limit inhibition and also dispersancy. The PCA has good tolerance to chlorine. And it is also compatible with a lot of microbiological control agents.

The PCA has excellent dispersion performance for the scale of calcium carbonate as well as calcium phosphate in circulating cool water system. The reason is via the introduction of a phosphonic group right into a carboxylic group. In addition, PCA has also good scale inhibition for barium sulfate, strontium sulfate as well as silica scale.

One more thing to note, phosphino carboxylic acid (PCA) can not be affected by chlorine or other oxidizing biocides in standard.

Mechanism of Action:

Phosphino carboxylic acid inhibits scale buildup on surfaces through at least three mechanisms. (More details, click here.)

Solubility enhancement or threshold effect, which reduces precipitation of low solubility inorganic salts.

Crystal modification, which deforms the growing organic salt crystals to give small, irregular, readily fractured crystals that do not adhere well to surfaces.

Dispersing activity, which prevents precipitated crystals or other inorganic particles from agglomerating and depositing on surfaces. Low molecular weight polymers are widely used to inhibit scaling in industrial water treatment.

Synonyms:

71050-62-9, 23636-66-0, CTK1A2745, DTXSID00559205, Phosphoranecarboxylicacid (8CI,9CI), ZINC113998343