The Ternary Diagram of the Durability of the Na₂O–CaO–SiO₂ Glasses towards Sodium Carbonate Solutions

JSGT 1944 V28 T113-T118

The author has determined the durability towards boiling 0·1N Na₂CO₃ solution of twenty-three soda–lime–silica glasses of compositions within the field of those in commercial use. By comparing the results with those of G. Keppeler & H. Ippach relating to the durability to water, the conclusion was drawn that the glass of highest durability both to water and 0.1N sodium carbonate solution is that of percentage composition: SiO₂ 75, CaO 10, Na₂O 15.

M. A. Besborodov