ISO 5939:1980 制铝用碳质材料.电极用沥青.水含量的测定.共沸蒸溜 [迪安 斯达克（Dean and Stark）测定法]法

标准编号：ISO 5939:1980

中文名称：制铝用碳质材料.电极用沥青.水含量的测定.共沸蒸溜 [迪安 斯达克（Dean and Stark）测定法]法

英文名称：Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of water content — Azeotropic distillation (Dean and Stark) method

发布日期：1980-07

标准范围

描述了一种方法，包括在二甲苯回流下加热沥青，在接收器中收集二甲苯和水的冷凝液，并测量接收器刻度部分分离出的水的体积。适用于含水量在0.1%和2%（m/m）之间的沥青。

Describes a method comprising the heating of the pitch under reflux with xylene, collection in a receiver of the condensate of xylene and water and measurement of the volume of water which separates out in the graduated part of the receiver. Applies to pitches having water contents in the range between 0,1 and 2 % (m/m).

标准预览图