ISO 9101-1987 表面活性剂 界面张力的测定 滴体积法

标准号：ISO 9101-1987
中文标准名称：表面活性剂 界面张力的测定 滴体积法
英文标准名称：Surface active agents; Determination of interfacial tension; Drop volume method
标准类型：G72
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 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：The volume of a drop of an aqueous phase formed at the end of a vertical capillary tube is measured when it detaches from the tube in contact with the organic phase. The interfacial tension between two liquid phases is obtained by balancing the weight of the drop with the interfacial tension force supporting it and applying a correction factor. Then the interfacial tension is calculated from the volume of the falling drop, the outer capillary radius, the density difference between the two liquid phases and the acceleration due to gravity.