Calcium Sulfide

Preparation of Calcium Sulfide Calcium Sulfide: Unless the charcoal is already very finely powdered, it should be ground thoroughly in a large porcelain mortar. 48 g of charcoal are mixed with 145 g of gypsum (CaSO4 • 1/2H2O; plaster of Paris) and placed in the clay crucible. Calcium Sulfide: The crucible is heat in a gas furnace to between … Read more