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现行 ISO 5939:1980
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Carbonaceous materials for the production of aluminium — Pitch for electrodes — Determination of water content — Azeotropic distillation (Dean and Stark) method 铝生产用碳质材料——电极沥青——水含量的测定——共沸蒸馏(Dean和Stark)法
发布日期: 1980-07-01
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).
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归口单位: ISO/TC 226
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