標準號：ISO 1388-2-1981
中文標準名稱：工業用乙醇 試驗方法 第2部分:以酚酞為指示劑檢驗堿度或測定酸度
英文標準名稱：Ethanol for industrial use; Methods of test; Part 2 : Detection of alkalinity or determination of acidity to phenolphthalein
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 acidities equal to or greater than 0.0008 % (m/m). The principle consists in the dilution of a test portion with carbon dioxide-free water, checking whether the test solution is alkaline or acid to phenolphthalein, and, if appropriate, determination of the acidity by titration with standard volumetric sodium hydroxide solution. The acidity is expressed as a percentage by mass of acetic acid. - International Standards ISO 1388/1 to 1388/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.