BS EN 12139-1999 表面活性剂.用HPLC/GPC法测定非离子表面活性剂中聚乙二醇含量

标准号：BS EN 12139-1999
中文标准名称：表面活性剂.用HPLC/GPC法测定非离子表面活性剂中聚乙二醇含量
英文标准名称：Surface active agents - Determination of the total polyethylene glycol content of non-ionic surface active agents (EO adducts) by HPLC/GPC
标准类型：G73
发布日期：1999/6/15 12:00:00
实施日期：1999/6/15 12:00:00
中国标准分类号：G73
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 total polyethylene glycol (PEG) content of 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 applies for concentrations of PEG higher than approximately 0,1 g/100 g of the laboratory sample. The method is applicable up to a degree of ethoxylation of at least 25 for products which are soluble in an 80/20 (V/V) mixture of methanol and water. Long-chain products with a low degree of ethoxylation, such as tallow alcohol