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ISO 5939:1980
ISO 5939:1980 Carbonaceous materials for the production of aluminium -- Pitch for electrodes -- Determination of water content -- Azeotropic distillation (Dean and Stark) method
standard by International Organization for Standardization, 07/01/1980
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M00050252
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Full Description
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).
