Numéro de référence
ISO 2368:1972
ISO 2368:1972
© ISO 2024
ISO 2368:1972
Fluorure d'aluminium à usage industriel — Dosage du fer — Méthode photométrique à la 1,10- phénanthroline
Edition 1
1972-12
1972-12
Annulée
Résumé
The method is applicable to products having a content greater than 0,020 %. The principle consists in dissolution of a test portion by either alkaline or acid fusion. Reduction of the iron(III) by hydroxylammonium chloride. Formation of the iro(II)-1, 10-phenanthroline complex in a buffered medium (pH value between 3,5 and 4,2) Photometric measurement of the coloured complex at a wavelength of about 510 nm.