BS EN 12582-1999 表面活性剂.用HPLC/ELSD方法根据非离子表面活性剂(乙氧基)中克分子质量测定聚乙二醇含量

标准号：BS EN 12582-1999
中文标准名称：表面活性剂.用HPLC/ELSD方法根据非离子表面活性剂(乙氧基)中克分子质量测定聚乙二醇含量
英文标准名称：Surface active agents - Determination of the polyethylene glycol content according to molar mass in non-ionic surface active agents (ethoxylated) by HPLC/ELSD
标准类型：G72
发布日期：1999/9/15 12:00:00
实施日期：1999/9/15 12:00:00
中国标准分类号：G72
国际标准分类号：71.100.40
适用范围：This European Standard specifies a method for the determination of the polyethylene glycol (PEG) content in aromatic and aliphatic non-ionic surface active agents of the type R-(O-C2H4) p OH; where p is the mean ethylene oxide (EO) value. It is applicable to all ethoxylated products soluble in methanol or methanol/water mixture. This method applies to PEG concentrations as mass fraction greater than or equal to 0,1 %. The method is not applicable to PEG whose molar mass is lower than 400 g/mol. Monomeric ethylene glycol, diethylene glycol, triethylene glycol and glycerol are not detected. NOTE Evaporative light scattering detector (ELSD) is convenient for routine methods.