2-Phosphonobutane -1 2 4-Tricarboxylic Acid PBTC CAS No. 37971-36-1

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Molecular Formula:   C7H11O9P   

CAS No.  37971-36-1

Alias: PBTCA

Molecular weight: 270.13

Structural Formula:

2-Phosphonobutane -1 2 4-Tricarboxylic Acid PBTC CAS No. 37971-36-1

Properties & Use

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	Clear, colorless to pale yellow aqueous solution
Active  acid %	50.0-51.0
Phosphorous acid(as PO33-)%	0.5 max
Phosphoric acid(as PO43-)%	0.2 max
Density (20℃) g/cm3	1.27 min
pH(1% water solution)	1.5~2.0
Fe ppm	10.0 max
Chloride ppm	10.0 max
Turbidity (NTU)	10.0 max
Color APHA	30.0 max

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2-Phosphonobutane -1,2,4-Tricarboxylic Acid ,PBTCA,PBTC