Comparison of Degradation of Borosilicate vs. Soda Lime Glass in Water

In investigating for chemically induced disintegration of Soda Lime and Borosilicate Glass, it was found that Borosilicate was much more resistant.

This occurred not only at slightly acidic conditions (pH 6), but also when the pH was raised to a value of 10 (alkaline). As shown on the chart, the degradation of Soda Lime glass is 10 times greater than that of Borosilicate glass. This considerable divergence in resistance properties begins at 134°C, the initial temperature in the study.

Translated from "VGB KRAFTWORKSTECHNIK", Dr. A. Peters, Feb. 1979