Standard ISO 684:1974 1.11.1974 preview

ISO 684:1974

Analysis of soaps — Determination of total free alkali

Automatically translated name:

Analysis of soaps -- Determination of total free alkali



STANDARD published on 1.11.1974


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The information about the standard:

Designation standards: ISO 684:1974
Publication date standards: 1.11.1974
SKU: NS-434301
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: International technical standard
Category: Technical standards ISO

The category - similar standards:

Surface active agents

Annotation of standard text ISO 684:1974 :

Description / Abstract: 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.

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