標準號：ISO 1388-9-1981
中文標準名稱：工業用乙醇 試驗方法 第9部分:酯類含量的測定 皂化后滴定法
英文標準名稱：Ethanol for industrial use; Methods of test; Part 9 : Determination of esters content; Titrimetric method after saponification
標準類型：G15
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：G15
國際標準分類號：71.080.60
適用范圍：The method is applicable to products having esters contents in the range 0.005 % (m/m) to 0.15 % (m/m). The principle consists in the saponification of esters present in a test portion by boiling with excess standard volumetric sodium hydroxide solution; determination of the residual sodium hydroxide, and hence the amount used for saponification, by titration with standard volumetric hydrochloric acid solution in the presence of phenolphthalein as indicator. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.