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PBTCA 2-Phosphonobutane-1,2,4-Tricarboxylic Acid CAS 37971-36-1
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Buy PBTCA 50% 2-Phosphonobutane-1,2,4-Tricarboxylic Acid CAS 37971-36-1, a chemical mainly used for water treatment from TNJ Chemical, which company is leading 2-Phosphonobutane-1,2,4-Tricarboxylic Acid CAS 37971-36-1 PBTCA suppliers, factory & manufacturers from China. If you want to buy PBTCA, please mail to sales25@tnjchem.com

2-Phosphonobutane -1, 2, 4-Tricarboxylic Acid CAS 37971-36-1 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.It’s 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.



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


PTBCA is a high efficient agent as scale and corrosion inhibitor. It is the excellent stabilizer for zinc salt. It is widely used in circulating cool water system and oilfield refill water system as scale and corrosion inhibitor, suitable to composite with zinc salt and copolymer. It can be used in situations of high temperature, high hardness, high alkali and high concentration index. In lavation fields, it is used as chelating agent and metal detergent.

PTBCA is usually used together with zinc salt, copolymer, organophosphine, imidazole and other Water Treatment Chemicals. When used alone, the dosage of 5-15mg/L is preferred.


250kg/drum; 20mt/20''container

1250kg/IBC drum,18drums/20”container


Stored in cool and airy place; away from fire and heat; handle with care; no breakage, avoid leakage.It is valid for 1 years under proper condition.

PBTCA is classified as Dangerous Good for transport.

Please refer to MSDS for more information about Safety,Storage and Transportation.

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      PBTCA 2-Phosphonobutane-1,2,4-Tricarboxylic Acid CAS 37971-36-1
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