Numéro de référence
ISO 757-2:1982
ISO 757-2:1982
© ISO 2024
ISO 757-2:1982
Acétone à usage industriel — Méthodes d'essai — Partie 2: Détermination de l'acidité à la phénolphtaléine — Méthode titrimétrique
Edition 1
1982-04
1982-04
Annulée
Résumé
The principle of the method consists in dilution of a test portion with carbon dioxide-free water, titration of the test solution, if acid, with standard volumetric sodium hydroxide solution, using phenolphthalein as indicator. The method is applicable to products having acidities, expressed as acetic acid, equal to or greater than 0,0006 % (m/m). International Standards ISO 757/1 to ISO 757/5 cancel and replace ISO Recommendation R 757-1968, of which they constitute a technical revision. This document has also been approved by the International Union of Pure and Applied Chemistry (IUPAC).
Cycle de vie
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Précédemment
AnnuléeISO/R 757:1968
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Actuellement