2-Phosphonobutane-l,2,4-tricarboxylic acid

Phosphonobutane-l,2,4-tricarboxylic acid (PBTC) is the most expensive of the commonly used phosphonates. However it is excellent at providing calcium carbonate control under highly stressed operating conditions. It is most resistant to the problem of calcium phosphonate precipitation and, from an environmental position, has the lowest phosphorus content of the common phosphonates. The acid material has a MW of 270. PBTC has a sequestration value of 280 mg CaC03/g product at a pH level of 11. It is very stable and can operate under very high pH conditions. However, it may also attack copper. Examples include Bayhibit AM, Mayoquest 2100, Phos -9, and Codex 551. 

Dimethylphosphite is the starting material for the manufacture of 2-phosphonobutan-l,2,4-tricarboxylic acid,... 

In addition to aminopolyphosphonic acids, polyphosphonic acids without amino function may also be analyzed by ion chromatography. Such compounds also serve as complexing agents for alkaline-earth metals and several auxiliary group elements. As for the monophosphonic acids, 2-phosphonobutane-l,2,4-tricarboxylic acid (PBTC) is of very high industrial importance. In diphosphonic... 

C.J. Zou, Q.W. Tang, P.W. Zhao, E.D. Guan, X. Wu, H. Ye 2013 Further study on the inclnsion complex of 2-phosphonobutane-l,2,4-tricarboxylic acid with B-cyclodextrin A new insight of high inhibition efficiency for protecting steel corrosion. Journal of Petroleum Science and Engineer-mgl03, 29-35. 

Fig. 3-104. Separation of polyphosphonic acids upon application of phosphorus-specific detection. - Separator column IonPac AS7 eluent 0.17 mol/L KC1 + 0.0032 mol/L EDTA, pH 5.1 flow rate 0.5 mL/min detection photometry at 410 nm after hydrolysis and derivatization with vana-date/molybdate injection 50 pL, l-hydroxyethane-l,l-diphosphonic acid (HEDP), aminotris-(methylenephosphonic acid) (ATMP), ethylenediamine-tetramethylenephosphonic acid (EDTP), l,l-diphosphonopropane-2,3-dicarboxylic acid (DPD), and 2-phosphonobutane-l,2,4-tricarboxylic add (PBTC) (taken from [84]).

Tetrasodium etidronate scale inhibitor, electroplating Ethylenediaminetetra (methylene phosphonic acid) Pentasodium diethylene triamine pentamethylene phosphonate 2-Phosphonobutane tricarboxylic acid-1,2,4 Sodium diethylenetriamine penta (methylene phosphonate) Tetrasodium etidronate scale inhibitor, flash desalination Ethylenediaminetetra (methylene phosphonic acid) Pentasodium diethylene triamine pentamethylene phosphonate 2-Phosphonobutane tricarboxylic acid-1,2,4 Sodium diethylenetriamine penta (methylene phosphonate) Tetrasodium etidronate scale inhibitor, food-contact paper/paperboard Acrylic acid/sulfonic acid copolymer scale inhibitor, geothermal Hexasodium diethylenetriaminepenta (methylenephosphonate) scale inhibitor, l l cleaners Hexasodium diethylenetriaminepenta (methylenephosphonate) Pentasodium aminotrimethylene phosphonate... 

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