Quartz (fused silica, SiO₂) has a melting point above 1700 °C; therefore, at 110 °C there is absolutely no risk of physical melting. The frit structure remains intact. However, chemical corrosion is a separate concern. Quartz is an acidic oxide and can be slowly attacked by alkaline solutions, especially at elevated temperatures. K₃PO₄ (tripotassium phosphate) [...]