Numéro de référence
ISO 2888:1973
ISO 2888:1973
© ISO 2025
ISO 2888:1973
Furfural à usage industriel — Détermination de l'acidité à la phénolphtaléine — Méthode volumétrique
Edition 1
1973-12
1973-12
Annulée
Résumé
Pretreatment of the water used, freshly boiled and cooled, by neutralization by addition of the standard volumetric sodium hydroxide solution or sulphuric acid solution as required. Addition of the test portion and titration with the standard volumetric sodium hydroxide solution in presence of phenolphthalein as indicator until the apperance of a pale pink colour.