Temperature Dependence Of Amber Colour Generation In Soda-Lime-Silica Glass

Recently, spectroscopic investigations in the UV-VIS range showed that the amber chromophore in soda-lime-silica glass vanishes with increasing temperature. Oxygen balance calculations have been carried out in order to explain this behaviour thermodynamically. The calculations yeild that, based on the available standard reaction enthalpies and standard reaction entropies, the product of the ferric and sulfide concentrations decreases with increasing temperature.