Jetzt anpassen und kaufen
37,40 €
exkl. USt.
Konfigurieren
Norm
ISO 2271:1989
Ausgabedatum: 1989 10 12
Surface active agents — Detergents — Determination of anionic-active matter by manual or mechanical direct two-phase titration procedure
The substance is determined in a medium consisting of an aqueous and a chloroform phase by titration with a standard volumetric cationic-active solution (benzethonium- ch...
Weiterlesen
Gültig
Herausgeber:
International Organization for Standardization
Format:
Digital | 6 Seiten
Sprache:
Englisch
ICS
The substance is determined in a medium consisting of an aqueous and a chloroform phase by titration with a standard volumetric cationic-active solution (benzethonium- chloride) in the presence of an indicator which consists of a mixture of cationic dye (dimidium bromide) and an anionic dye (acid blue 1). The method is applicable to solids or to aqueous solutions of the active material. The relative molecular mass of the anionic active matter has to be known. The method is not applicable if cationic surface active agents are present.
ISO 2271:1989
1989 10 12
Surface active agents — Detergents — Determination of anionic-active matter by manual or mechanical ...
Norm
↖
ISO 2271:1972
1972 09 01
Surface active agents — Detergents — Determination of anionic-active matter (Direct two-phase titrat...
Norm