GB/T 7385-1994 in English

《GB/T 7385-1994非离子型表面活性剂 聚乙氧基化衍生物中氧乙烯基含量的测定 碘量法》由606（中国石油和化学工业联合会）归口，主管部门为中国石油和化学工业联合会。
本标准规定了用碘量法测定聚氧乙烯型非离子表面活性剂中氧乙烯基团的含量。本标准适用于饱和伯脂肪醇、油醇、饱和脂肪酸、直链和支链的烷基酚的聚乙氧基化衍生物。若衍生物中有未反应的醇、脂肪酸或烷基酚存在时，本标准也适用。

1 Scope

This Standard specifies a method for the iodometric determination of oxyethylene groups in polyethoxylated non-ionic surface active agents.
This Standard is applicable to the analysis of polyethoxylated derivatives of primary saturated fatty alcohols, oleyl alcohol, saturated fatty acids, straight and branched chain alkylphenols. It is also applicable in the presence of unreacted alcohols, fatty acids or alkylphenols of the types mentioned above.
This Standard is not applicable in the presence of: compounds containing sulfur or nitrogen; compounds containing oxygen or halogen atoms on adjacent carbon atoms other than as oxyethylene groups, for example compounds containing oxypropylene groups; aldehydes or acetals; sterols and derivatives.