ISO 6387-1983 表面活性剂 钙皂分散力的测定 酸量滴定法(改进的舍恩费尔特法)

标准号：ISO 6387-1983
中文标准名称：表面活性剂 钙皂分散力的测定 酸量滴定法(改进的舍恩费尔特法)
英文标准名称：Surface active agents; Determination of the power to disperse calcium soap; Acidimetric method (Modified Schoenfeldt 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：A 0,5 % (m/m) aqueous soap solution is prepared, and after maintaining this at testing temperature for 24 h, an aliquot portion of this solution is taken. This aliquot portion is mixed with a dilute solution of the dispersing agent (surface active agent) and subsequently with a specified volume of water of known calcium hardness. The mixture is maintained for 1 h at the testing temperature and then the calcium soap present in a aliquot portion of the lower layer is titrated with a standard volumetric solution of hydrochloric acid in the presence of bromcresol green as indicator.