ISO 684:1974 PDF

Original price was: $43.00.Current price is: $33.54.

Analysis of soaps — Determination of total free alkali

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The soap is dissolved in an ethanolic solution, the free alkali is neutralized with a known excess of sulphuric acid solution and the excess acid is titrated with ethanolic potassium hydroxide solution. The method is not applicable if the soap cantains additives (alkali, silicates, etw.) which can be decomposed by sulphuric acid by the procedure specified. The method is also not applicable to coloured soaps if the colour interferes with the phenolphthalein end point.

Edition

1974

Published Date

1974

Published By

International Standardization Organisation

Page Count

2

ISO 684:1974 PDF
$43.00 Original price was: $43.00.$33.54Current price is: $33.54.