标准摘要
[中文适用范围]： 该方法适用于醛含量在0.00025%（m/m）至0.00125%（m/m）范围内的产品。 其原理基于测试部分中存在的醛与希夫试剂的反应。 将获得的颜色与含有已知量乙醛的标准比色溶液的颜色进行目视比较。 - 国际标准 ISO 1388/1 至 ISO 1377/12 取消并取代了 ISO 建议 R 1388-1970，它们构成了技术修订版。 [外文原描述]： The method is applicable to products having aldehyde contents in the range 0.00025 % (m/m) to 0.00125 % (m/m). The principle is based on the reaction of the aldehydes present in a test portion with Schiff reagent. Visual comparison of the colour obtained with the colours of standard colorimetric solutions containing known quantities of acetaldehyde. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.
英文名称Ethanol for industrial use — Methods of test — Part 5: Determination of aldehydes content — Visual colorimetric method