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

(PBTCA)

CAS No. 37971-36-1

Molecular Formula: C7H11O9P

Molecular weight: 270.13

Synonyms: Dequest 7000, PBTC, Phosphonobutane Tricarboxylic Acid

Structural Formula:

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

Usage:

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.

PBTCA 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.

PBTCA 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.

Package and Storage:

200L plastic drum, IBC (1000L), customers’ requirement.

Storage for one year in shady room and dry place.

Safety Protection:

Acidity, Avoid contact with eye and skin, once contacted, flush with water.