标准摘要
[中文适用范围]： 对单独的测试部分进行以下测定：测量甲醇介质中的表观pH；水含量的测定；伯胺、仲胺和叔胺含量分布的测定；氧乙烯基含量的测定；硫酸盐灰分的测定。 此外，制备测试部分的水溶液或甲醇溶液并分离游离聚乙二醇。 验证了分离的聚乙二醇中不存在氮并测定了它们的相对分子质量。 [外文原描述]： On separate test portions the following determinations are carried out: measurement of the apparent pH in methanolic medium; determination of the water content; determination of the distribution of primary, secondary and tertiary amines contents; determination of oxyethylene groups content; determination of sulphated ash. Furthermore an aqueous or methanolic solution of a test portion is prepared and the free polyethylene glycols are isolated. On the separated polyethylene glycols the absence of nitrogen is verified and their relative molecular mass is determined.
英文名称Surface active agents — Technical ethoxylated fatty amines — Methods of analysis