ISO 9455-9:1993 软焊剂.试验方法.第9部分：氨含量测定

标准编号：ISO 9455-9:1993

中文名称：软焊剂.试验方法.第9部分：氨含量测定

英文名称：Soft soldering fluxes — Test methods — Part 9: Determination of ammonia content

发布日期：1993-04

标准范围

规定方法的原理是用氢氧化钠蒸馏制备的助焊剂溶液，以排出助焊剂中存在的氨，将所得馏出物通入标准硫酸溶液，用氢氧化钠溶液滴定多余的酸，并计算助焊剂中的氨含量。仅适用于ISO 9454-1中定义的3.1.1级焊剂。

The principle of the method specified is to distil a prepared flux solution with sodium hydroxide to expel the ammonia present in the flux, to pass the resulting distillate into a standard sulfuric acid solution, to titrate the excess acid with sodium hydroxide solution and to calculate the ammonia content of the flux. Applies to fluxes of class 3.1.1 only, as defined in ISO 9454-1.

标准预览图