Résumé
The sample is hydrolyzed by refluxing under acid conditions. The non-hydrolyzable anionic-active matter is determined by the direct two-phase titration procedure describes in ISO 2271. This method is applicable to the determination of cyclic sulphonates in alkylphenol ether sulphates and of small amounts of sulphonates in sulphated fatty alcohols. The molar mass of the anionic matter must be known or previously determined, if its content is expressed as percentage by mass.
Informations générales
-
État actuel: PubliéeDate de publication: 1973-12Stade: Norme internationale confirmée [90.93]
-
Edition: 1Nombre de pages: 2
-
Comité technique :ISO/TC 91ICS :71.100.40
- RSS mises à jour
Prévisualiser
Prévisualiser cette norme sur notre Plateforme de consultation en ligne (OBP)
Cycle de vie
Vous avez une question?
Consulter notre FAQ
Service à la clientèle
+41 22 749 08 88
Horaires d’ouverture:
De lundi à vendredi - 09:00-12:00, 14:00-17:00 (UTC+1)