Reference number
ISO 4315:1977
ISO 4315:1977
© ISO 2024
International Standard
ISO 4315:1977
Surface active agents — Determination of alkalinity — Titrimetric method
Edition 1
1977-02
1977-02
ISO 4315:1977
10184
Publicado
(Edición 1, 1977)
Esta publicación se revisó y confirmó por última vez en 2022.
Por lo tanto, esta versión es la actual.
Resumen
A clear solution of the substance is titrated with a standard volumetric hydrochloric acid solution, in the presence of methyl orange or bromophenol blue as indicator. This method is only applicable when so indicated in the specific standard for each product; in particular, it is not suitable for products containing soaps.