ISO 6387:1983 表面活性剂.钙皂分散力的测定.酸量滴定法（改进的施弯费尔德（Schoenfeidt）

标准编号：ISO 6387:1983

中文名称：表面活性剂.钙皂分散力的测定.酸量滴定法（改进的施弯费尔德（Schoenfeidt）

英文名称：Surface active agents — Determination of the power to disperse calcium soap — Acidimetric method (Modified Schoenfeldt method)

发布日期：1983-02

标准范围

制备0.5%（m/m）的肥皂水溶液，并在试验温度下保持24小时后，取该溶液的等分部分。该等分部分与分散剂（表面活性剂）的稀释溶液混合，随后与已知钙硬度的规定体积的水混合。在试验温度下将混合物保持1h，然后在溴甲酚绿作为指示剂的情况下，用盐酸标准体积溶液滴定下层等份中的钙皂。

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.

标准预览图