ISO 4626:2023 挥发性有机液体 原料用有机溶剂沸程的测定

标准编号：ISO 4626:2023

中文名称：挥发性有机液体 原料用有机溶剂沸程的测定

英文名称：Volatile organic liquids — Determination of boiling range of organic solvents used as raw materials

发布日期：2023-07

标准范围

这份文件规定了一种测定沸点在30？°C和300？并且化学稳定并且在蒸馏过程中不会腐蚀设备。该方法适用于烃类、酯类、醇类、酮类、醚类等有机液体及类似产品。笔记？1？该方法与ISO中描述的方法不同？918关于蒸馏烧瓶的体积、冷却器和蒸馏接收器的类型。笔记？2？该方法与ISO中规定的方法不同？3405相对于蒸馏烧瓶的体积和烧瓶支架中的孔的直径。

This document specifies a method for determining the boiling range of liquids that boil between 30 °C and 300 °C at normal pressure, and that are chemically stable and do not corrode the apparatus during the distillation.

The method is applicable to organic liquids such as hydrocarbons, esters, alcohols, ketones, ethers and similar products.

NOTE 1        The method differs from that described in ISO 918 with respect to the volume of the distillation flask, the type of cooler and the distillation receiver.

NOTE 2        The method differs from that specified in ISO 3405 with respect to the volume of the distillation flask and the diameter of the hole in the flask support.

标准预览图