2-Phosphonobutane-1,2,4-tricarboxylic acid PBTC

The original commercial technology (from Monsanto) offered two primary phosphonates (ATMP and HEDP) for cooling water. A third phosphonate (phosphonobutane tricarboxylic acid, PBTC) has since become widely available, and, as many manufacturers have entered the market, phosphonate products have become common and have declined in price, making them very cost-effective. As a consequence, one or more of... 

Phosphonobutane tricarboxylic acid (PBTC) is the most expensive of the commonly used phosphonates. It is excellent at providing calcium carbonate control in high hardness/high alkalinity waters under very stressful operating conditions. It is the most resistant to chlorine attack and calcium phosphonate precipitation. 

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. 

CaCOi scale inhibitor and building block-corrosion inhibitor, CI2 resistant PBTC Phosphonobutane tricarboxylic acid examples Bayhibit AM, Mayoquest 2100, Phos 9, Codex 551 CaCOi scale inhibitor and building block-corrosion inhibitor for high stress HPCA Hydroxyphosphonoacetic acid example Belcor 575... 

NKC-905 B. T.A.. See 1 H-Benzotriazole NKC-910 HEDP. See Etidronic acid NKC-960 PBTC. See 2-Phosphonobutane tricarboxylic acid-1,2,4 NKC-980 HPMA. See Maleic anhydride, homopolymer... 

PBB-PA. See Poly (pentabromobenzyl) acrylate 1,2-PBD. See 1,2-Polybutadiene PBDPO. See Pentabromodiphenyl oxide PBN PBNA. See Phenyl-p-naphthylamine PBT PBT-1100] PBT-1300r, PBT-1700. See Polybutylene terephthalate PBTC. See 2-Phosphonobutane tricarboxylic acid-1,2,4... 

Phosphonobutane tricarboxylic acid-1,2,4 CAS 37971-36-1 EINECS/ELINCS 253-733-5 Synonyms 1,2,4-Butanetricarboxylic acid, 2-phosphono- PBTC 2-Phosphonobutane-1,2,4-tricarboxylic acid Empirical CyHnOgP Properties M.w. 270.13... 

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... 

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]).

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