Reference number
ISO 4314:1977
ISO 4314:1977
© ISO 2024
International Standard
ISO 4314:1977
Surface active agents — Determination of free alkalinity or free acidity — Titrimetric method
Edition 1
1977-02
1977-02
ISO 4314:1977
10183
Published
(Edition 1, 1977)
This publication was last reviewed and confirmed in 2022.
Therefore this version remains current.
Abstract
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.