2-Phosphonobutane -1,2,4-Tricarboxylic Acid Organophosphine antiscale and corrosion inhibitor, Chelants Dequest 7000
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<p> <b>2-Phosphonobutane -1,2,4-Tricarboxylic Acid<br /> (PBTCA)</b> </p> <div align="left"> <b>CAS No. 37971-36-1<span> </span></b> </div> <div align="left"> <b>Molecular Formula: C<sub>7</sub>H<sub>11</sub>O<sub>9</sub>P <span> Molecular weight: 270.13</span></b> </div> <div align="left"> <b>Synonyms: Dequest 7000, PBTC, Phosphonobutane Tricarboxylic Acid</b> </div> <div align="left"> <b>Properties:</b> </div> <div> PBTCA has low content of phosphoric and 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. </div> <div align="left"> <b>Specification:</b> </div> <div align="center"> <table border="1" cellspacing="0" cellpadding="0" width="500"> <tbody> <tr> <td> <div align="center"> Items </div> </td> <td> <div align="center"> Index </div> </td> </tr> <tr> <td> <div align="left"> Appearance </div> </td> <td> <div align="center"> Clear, colorless to pale yellow aqueous solution </div> </td> </tr> <tr> <td> <div align="left"> Active acid % </div> </td> <td> <div align="center"> 49.0-51.0 </div> </td> </tr> <tr> <td> <div align="left"> Phosphorous acid(as PO<sub>3</sub><sup>3-</sup>) % </div> </td> <td> <div align="center"> 0.8 max </div> </td> </tr> <tr> <td> <div align="left"> Phosphoric acid(as PO<sub>4</sub><sup>3-</sup>) % </div> </td> <td> <div align="center"> 0.5 max </div> </td> </tr> <tr> <td> <div align="left"> Density (20℃) g/cm<sup>3</sup> </div> </td> <td> <div align="center"> 1.27 min </div> </td> </tr> <tr> <td> <div align="left"> pH (1% water solution) </div> </td> <td> <div align="center"> 2.0 max </div> </td> </tr> <tr> <td> <div align="left"> Fe ppm </div> </td> <td> <div align="center"> 20.0 max </div> </td> </tr> <tr> <td> <div align="left"> Chloride ppm </div> </td> <td> <div align="center"> 10.0 max </div> </td> </tr> </tbody> </table> </div>
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