邻苯二甲酸氢钾中纯度检测方案(自动电位滴定)

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KGM KYOTO ELECTRONICSMANUFACTURING CO.，LTD.TIQ-99328enL-K-M KYOTO ELECTRONICSMANUFACTURING CO.，LTD. Application Memo Purity of Potassium Hydrogen Phthalate Industryinorganic chemical industryInstrumentautomatic potentiometric titratorMeasurement methodacid-base titrationStandardsGB/T 1291， JIS K 8809 1. Overview According to the standard testing method JIS K 8809-2014 Potassium hydrogen phthalate(Reagent)， the test liquid is measured by titration with 1mol/L sodium hydroxide after thesample is diluted with water. The endpoint is the maximum inflexion on the titration curve. The purity of potassiumhydrogen phthalate is calculated from the titration volume of sodium hydroxide. 2. Apparatus Main unit Automatic potentiometric titrator (preamplifier： STD) Electrode Combined glass electrodeTemperature compensation electrode 3. Reagents Titrant 1 mo1/L sodium hydroxide Solvent Pure water 4. Example Sample Titer Purity (g) (mL) (%) 1 5.002 25.3986 98.82 2 5.055 25.6515 98.76 3 4.978 25.2317 98.65 Average 98.74 SD 0.09 0.09 —Titration curve- Please feel free to contact us for any further information. Kyoto Electronics Manufacturing Co.， Ltd. Overseas Sales & Marketing Sect. 京都电子工业株式会社-可睦电子(上海)商贸有限公司-上海市徐汇区宜山路333号1201室电话：021-54488867 电邮： kemu-kem@163.com 网址： http：//www.kem-china.com 邻苯二甲酸氢钾纯度的测定 应用资料(英文版)根据标准测试方法GB/T 1291化学试剂 邻苯二甲酸氢钾，试样用水稀释后，用1mol/L氢氧化钠滴定测定。终点是滴定曲线上的最大拐点。邻苯二甲酸氢钾的纯度是根据氢氧化钠的滴定体积计算。