PBTCA You May Also Be Interested In: pbtca phosphonic acid phosphorous acid zinc salt
2-Phosphonobutane -1,2,4-Tricarboxylic Acid

Molecular Formula: C7H11O9P Molecular weight: 270.13

Dequest 7000

This product has structural features of both phosphonic acid and carboxylic acid group, which enable its excellent antiscale corrosion inhibition properties. Its antiscale property under high temperature is far better than that of organophosphines. It can also improve the solubility of zinc salt, has good chlorine oxidation resistance and good composite synergy.

Appearance Colorless or light yellow transparent liquid
Active acid % 50.0 min
Phosphorous acid (as PO33-) % 0.8 max
Phosphorous acid (as PO43-) % 0.5 max
Density (200) g/cm3 1.27 min
pH (1% solution) 1.5~2.0
PBTCA is usually used together with zinc salt, copolymer, organophosphine, imidazole and other water treatment agents.