標(biāo)準(zhǔn)號(hào)：ISO 1388-2-1981
中文標(biāo)準(zhǔn)名稱：工業(yè)用乙醇 試驗(yàn)方法 第2部分:以酚酞為指示劑檢驗(yàn)堿度或測(cè)定酸度
英文標(biāo)準(zhǔn)名稱：Ethanol for industrial use; Methods of test; Part 2 : Detection of alkalinity or determination of acidity to phenolphthalein
標(biāo)準(zhǔn)類型：G15
發(fā)布日期：1999/12/31 12:00:00
實(shí)施日期：1999/12/31 12:00:00
中國(guó)標(biāo)準(zhǔn)分類號(hào)：G15
國(guó)際標(biāo)準(zhǔn)分類號(hào)：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.