Specification :

2-Phosphonobutane -1,2,4-Tricarboxylic Acid
(PBTCA)
CAS No. 37971-36-1 Dequest 7000
Molecular Formula: C7H11O9P Molecular weight: 270.13
Structural Formula:

Properties :
PBTCA has low content of phosphoric, has structural features of both phosphoric acid and carboxylic acid group, which enable its excellent scale and corrosion inhibition properties. Its antiscale property under high temperature is far better than that of organophosphines. It can improve zinc salt solubility, has good chlorine oxidation tolerance and good composite synergy.
Specification:
items index
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 (20¡æ) g/cm3 1.27 min
pH(1% solution) 1.5~2.0