UNI 3106 : 1950
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.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 NICKEL CONTENT OF STEEL - WEIGHT METHOD WITH DIMETHYLGLYOXINE
11-07-2019
01-01-1950
Aggiungendo ad una soluzione leggermente ammoniacale od acetica di nichel una soluzione di dimetilgliossima in alcool etilico o metilico, si forma un precipitato rosso di nicheldimetilgliossima. Si essicca in stufa il grogiuolo con il precipitato a 150 gradi c sino a peso costante, si lascia raffreddare in essiccatore e si pesa. Soluzioni e reattivi. Procedimento. Calcolo.
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