UNI 2963 : 1949
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.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 CHEMICAL ANALYSIS OF METALLIC MATERIALS - DETERMINATION OF TOTAL SILICON CONTENT OF FERROSILICON
11-07-2019
01-01-1949
Il silicio, mediante disgregazione con perossido di sodio, viene trasformato in silicato alcalino, il quale a sua volta viene decomposto con acido cloridrico. La silice viene separata mediante evaporazione a secco e infine volatilizzata con acido fluoridrico. Procedimento. Calcolo.
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