ISO 6791:1981

Current Revision
Carbonaceous materials for the production of aluminium -- Pitch for electrodes -- Determination of contents of quinoline-insoluble material

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ISO 6791:1981

Carbonaceous materials for the production of aluminium -- Pitch for electrodes -- Determination of contents of quinoline-insoluble material

PUBLISH DATE 1981
ISO 6791:1981

Specifies a conventional gravimetric method for the determination.

A test portion is treated with quinoline in a beaker at 70 to 80 °C for 15 to 20 min.

Then the dissolved test portion and the residue are brought to a Hartley funnel fitted with a filter pad, and are filtered.

The washed and dried residue on the filter pad is weighed.

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