UNI 2964-1949
Procedures for chemical analysis of metallic materials. Determination of tungsten content of ferrosilicon. Weight method with cinchonine.

Standard No.

UNI 2964-1949

Release Date

1949

Published By

IT-UNI

Latest

UNI 2964-1949

Scope

The tungsten is transformed into tungstic anhydride by attack with hydrofluoric acid and nitric acid, the cinchonine tungstate is precipitated with cinchonine, the tungstic anhydride is calcined and purified by disintegrating it with sodium carbonate. Solutions and reagents. Method. Calculation.

UNI 2964-1949 history

• 1949 UNI 2964-1949 Procedures for chemical analysis of metallic materials. Determination of tungsten content of ferrosilicon. Weight method with cinchonine.