UNDER a pressure of carbon dioxide of 39.5 atmospheres, thermal dissociation of calcium carbonate takes place at 1,240°–1,242° C. 1,2 with the formation of a eutectic melt of lime and calcium ...

THE barium oxide–carbon, dioxide system has been examined at pressures of carbon dioxide up to 450 atm. 1 and is similar in many respects to that of calcium oxide and carbon dioxide 2. To bring out ...