Description
Class C01F : COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
Subclass 5/12: Compounds of magnesium Magnesia by thermal decomposition of magnesium compounds (calcining magnesite or dolomite C04B 2/1) by thermal decomposition of magnesium sulfate, with or without reduction