肥皂中氯化物检测方案(自动电位滴定)

肥皂中氯化物含量的测定 应用资料在测试样品中加入甲醇后，用0.1ml/L硝酸银溶液滴定法测定肥皂中的氯化物(转化为氯化钠)。终点由滴定曲线上的拐点决定。氯离子浓度由硝酸银的滴定体积计算得出。TIE-92004enL上海市徐汇区宜山路333号1201室网址： http：//www.kem-china.comIKYOTO ELECTRONICSMANUFACTURING CO.，LTD. Application MemoChloride in Soap Industry Cosmetics soapInstrument Automatic potentiometric titratorMeasurement method Precipitation titrationStandards ISO 457， QB/T 2623.6 1.Overview The chloride (converted to NaCl) in soap is measured by titration with the 0.1ml/L silvernitrate solution after methanol is added to the test sample. The endpoint is determined by theinflexion point on the titration curve. Chloride concentration is calculated from the titrationvolume of silver nitrate. 2. Apparatus Main unit Automatic potentiometric titrator (preamplifier STD) Electrode Silver electrode Mercury sulfate reference electrode 3. Reagents Titrant 0.1mol/L silver nitrate solution Solvent Methanol 4. Example —Measurement resultSs一 Chloride Sample Titer Chlorideconcentration (mL) (mL) (%) 1 3.2139 2.8540 0.52171 — 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 电话： 021-54488867 电邮： kemu-kem@163.com