标准摘要
[中文适用范围]: 明确限定在甲醇含量介于百分之零点一零至百分之一点五零的区间内。作为一套试验方法指南,它详细规定了从样品采集、预处理到最终分析测定的一系列操作流程与技术要求。文档内容涵盖了实验所需的仪器设备规格、试剂纯度要求、具体操作步骤及计算公式,旨在确保不同实验室在测定乙醇中微量甲醇时能够获得一致且准确的结果。该规范采用了国际通用的技术框架与测试原理,对实验环境条件及数据处理方法作出了统一约束,为工业乙醇的质量控制与安全评估提供了可靠的技术依据,有助于保障下游产品使用过程中的安全性与合规性。 [外文原描述]: The principle is based on the conversion of the methanol present in a test portion to formaldehyde by oxidation with a solution of potassium permanganate in phosphoric acid. Reaction of the formaldehyde formed with Schiff reagent. Visual comparison of the colour obtained with the colours of standard colorimetric solutions containing known quantities of formaldehyde. - 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 8: Determination of methanol content (methanol contents between 0,10 and 1,50 % (V/V)) — Visual colorimetric method