ISO 1388-4:1981 工业用乙醇.试验方法.第4部分：中等量的羰基化合物含量的测定.滴定法

标准编号：ISO 1388-4:1981

中文名称：工业用乙醇.试验方法.第4部分：中等量的羰基化合物含量的测定.滴定法

英文名称：Ethanol for industrial use — Methods of test — Part 4: Estimation of content of carbonyl compounds present in moderate amounts — Titrimetric method

发布日期：1981-12

标准范围

本方法适用于羰基化合物含量等于或大于0.01%（m/m）的产品。该方法仅允许测定在规定条件下发生反应的羰基化合物。该原理基于氯化羟胺与供试品中羰基化合物的反应，以及在溴酚蓝作为指示剂的情况下，用标准体积氢氧化钠溶液滴定形成的盐酸。-国际标准ISO 1388/1至ISO 1377/12取消并取代了ISO建议R 1388-1970，这些标准构成了技术修订版。

The method is applicable to products having carbonyl compounds contents equal to or greater than 0.01 % (m/m). The method only allows determination of those carbonyl compounds which react under the specified conditions. The principle is based on the reaction of hydroxylammonium chloride with the carbonyl compounds in a test portion and titration of the hydrochloric acid formed with standard volumetric sodium hydroxide solution, in the presence of bromophenol blue 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.

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