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KoM KYOTO ELECTRONICSMANUFACTURING CO.,LTD.TIQ-98053enL网址: http://www.kem-china. com-K-MKYOTOELECTRONICSMANUFACTURING CO.,LTD. Application Memo Determination of Cationic Surfactant Industry Inorganic chemical industryInstrument Automatic potentiometric titratorMeasurement method Ionic titration Standards 1. Overview JIS K3362-2008 specifies test method for synthetic detergent. But here we demonstratedetermination by using the particle changer detector unit (PCD-500) and the automaticpotentiometric titrator. This method does not use toxic chloroform and indicator, and theendpoint is found automatically. This method makes use of quantitative ion associationreaction and determines the endpoint by stoichiometry. The ion concentration can be obtainedwith good precision based1 g on the same principle as the Epton Method. To begin with, dilutesample liquid with pure water to prepare the test sample. Transfer the prepared sample with awhole pipette, and titrate with 0.04mol/L sodium dodecyl sulfate (SDS) using PCD-500. Thesudden change of streaming potential is the endpoint. The concentration of surfactant iscalculated from the titration volume. 2. Apparatus Main unit Automatic potentiometric titrator (preamplifier STD)Particle changer detector unit (PCD-500) 3. Reagents Titrant 0.004mol/L sodium dodecyl sulfate (SDS) Solvent Distilled water 4. Example —Measurement results· s- Sample Titer Surfactant (g) (mL) (%) 1 22.6226 8.9745 10.759 2 22.6226 8.9287 10.704 3 22.6226 8.9979 10.787 Average 10.750 SD .042 RSD(%) 0.39 Please feel free to contact us for any further information.
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