Sodium carbonate for industrial use — Determination of matter insoluble in water at 50 degrees C
NORMA vydána dne 1.2.1976
Označení normy: ISO 746:1976
Datum vydání normy: 1.2.1976
Počet stran: 2
Přibližná hmotnost: 6 g (0.01 liber)
Země: Mezinárodní technická norma
Kategorie: Technické normy ISO
Description / Abstract: The principle of the method consists in dissolution of a test portion and filtration of the solution through a tared filter. Washing of the insoluble matter at approximately 50 C until the washings are no longer alkaline. Drying of the residue and weighing. Replaces ISO Recommendation R 746-1968.