UNI 3894 : 1957
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
PROCEDURES FOR THE CHEMICAL ANALYSIS OF MINERALS - DETERMINATION OF THE TOTAL IRON CONTENT OF CHROME MINERALS - VOLUMETRIC METHOD BY MEANS OF DISAGGREGATION WITH SODIUM PEROXIDE
11-07-2019
01-01-1957
Dopo disgregazione del minerale con perossido di sodio, si separa l'idrato di ferro mediante doppia precipitazione, si scioglie l'idrato in acido-cloridrico e si determina il ferro mediante titolazione con cloruro stannoso e permanganato potassico. Soluzioni e reattivi. Procedimento. Prova in bianco. Calcolo.
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.