ISO 6845-1989 表面活性剂 工业烷烃磺酸盐 烷烃单磺酸盐平均相对分子质量和烷烃单磺酸盐含量的测定

标准号：ISO 6845-1989
中文标准名称：表面活性剂 工业烷烃磺酸盐 烷烃单磺酸盐平均相对分子质量和烷烃单磺酸盐含量的测定
英文标准名称：Surface active agents; technical alkane sulfonates; determination of the mean relative molecular mass of the alkane monosulfonates and the alkane monosulfonate content
标准类型：G72
发布日期：1999/12/31 12:00:00
实施日期：1989/7/15 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 test portion is dissolved in ethanol and the solution is acidified. The alkane monosulfonic acids are separated from the alkane disulfonates and sulfate ions by extraction with light petroleum. The light petroleum phase is evaporated and the residue is solved in ethanol. Traces of alkali are removed by means of a cation-exchange column. The eluate is neutralized with carbonate-free sodium hydroxide solution. The sodium alkane monosulfonates so formed are dried and weighed. The mean relative molecular mass of the alkanemonosulfonates and the alkanemonosulfonate content are calculated.