Résumé

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The method is applicable to products having esters contents in the range 0.005 % (m/m) to 0.15 % (m/m). The principle consists in the saponification of esters present in a test portion by boiling with excess standard volumetric sodium hydroxide solution; determination of the residual sodium hydroxide, and hence the amount used for saponification, by titration with standard volumetric hydrochloric acid solution in the presence of phenolphthalein as indicator. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.


Informations générales 

  • État actuel
     : Publiée
    Date de publication
     : 1981-12
  • Edition
     : 1
    Nombre de pages
     : 3
  • Comité technique
     : ISO/TC 47 Chimie
  • ICS
     :
    71.080.60 Alcools. Éthers

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  8. ISO 1388-9:1981