Betekenis van:
hydrofluoric acid

Voorbeeldzinnen

1. hydrofluoric acid
2. Einecs name Hydrofluoric acid, anhydrous hydrofluoric acid
3. Hydrogen fluoride (hydrofluoric acid)
4. Dissolves slowly in hydrofluoric acid and in hot concentrated sulfuric acid.
5. Insoluble in water and organic solvents. Dissolves slowly in hydrofluoric acid and in hot concentrated sulfuric acid.
6. If any silica remains in the residue, redissolve it in a few millilitres of hydrofluoric acid (3.4) and evaporate to dryness.
7. Allow to cool, add a few drops of water followed by 10 to 15 ml of hydrofluoric acid (3.4) and evaporate to dryness at about 150 oC.
8. Fluorite (also called fluorspar) is used mainly for the production of hydrofluoric acid (which in turn is used largely to make aluminium fluoride, for the production of aluminium by electrolysis).
9. As had been the case with Nuova Mineraria Silius, most of the output would be sold to Fluorsid SpA, a supplier of hydrofluoric acid, in which the Region of Sardinia had a 40 % holding.