ISO 4314:1977
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Surface active agents — Determination of free alkalinity or free acidity — Titrimetric method
| Published By | Publication Date | Number of Pages |
| ISO | 1977-02 | 4 |
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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