標準號：ISO 6845-1989
中文標準名稱：表面活性劑 工業烷烴磺酸鹽 烷烴單磺酸鹽平均相對分子質量和烷烴單磺酸鹽含量的測定
英文標準名稱：Surface active agents; technical alkane sulfonates; determination of the mean relative molecular mass of the alkane monosulfonates and the alkane monosulfonate content
標準類型：G72
發布日期：1999/12/31 12:00:00
實施日期：1989/7/15 12:00:00
中國標準分類號：G72
國際標準分類號：71.100.40
適用范圍：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.