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
Publicado
(Edición 1, 1977)
Esta publicación se revisó y confirmó por última vez en 2022.
Por lo tanto, esta versión es la actual.
Resumen
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.