ISO/TC 91 Grenzflächenaktive Stoffe,
ISO/TC 91 Surface active agents,
ISO/TC 91 Agents de surface,
ISO Internationale Organisation für Normung,
ISO International Organization for Standardization,
ISO Organisation Internationale de Normalisation
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Media type:
Standard
Title:
ISO 4314
:
Surface active agents; Determination of free alkalinity or free acidity; Titrimetric method
Other titles:
Grenzflächenaktive Stoffe; Bestimmung der freien Alkalität oder der freien Azidität; titrimetrische Methode
Agents de surface; Détermination de l'alcalinité libre ou de l'acidité libre; Méthode titrimétrique
Footnote:
Internationale Übereinstimmung mit: BS 6829-1.2 (1988-08-31) - identisch; GB/T 6365 (2006) - identisch; NF T73-205 (1977-10-01) - identisch; UNE 55540 (1979-12-15) - nicht äquivalent; KS M ISO 4314 (2003-11-14) - identisch; NBN T 63-131 (1980) - identisch; NP-1522 (1977) - identisch; NP-1522 (1986) - identisch; STN ISO 4314 (1997-02-01) - identisch; CSN 68 1152 (1994-11-01) - nicht äquivalent
Description:
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.