ISO 4314:1977

Current Revision
Surface active agents -- Determination of free alkalinity or free acidity -- Titrimetric method

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ISO 4314:1977

Surface active agents -- Determination of free alkalinity or free acidity -- Titrimetric method

PUBLISH DATE 1977
ISO 4314:1977

The determination is carried out in the following way:

Titration of an ethanolic or propanolic solution of the product with a standard volumetric potassium hydroxide or hydrochloric acid or sulphuric acid solution whichever is appropriate, in the presence of phenolphthalein as indicator.

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