What is the maximum temperature a glass pot can withstand? How to remove burnt-on residue from the bottom of a glass pot?

Glass cookware is one of the most common items in modern kitchens. When selecting glass pots, people often consider factors like their material properties—such as the maximum temperature they can withstand—and what to do if food burns to the bottom.
Crafted from quartz glass, these pots boast an extremely low thermal expansion coefficient and exceptional heat resistance. Combined with quartz glass's stable chemical properties, low electrical conductivity, and optimal ultraviolet light transmission, pots made from this material are highly versatile for frying, deep-frying, stir-frying, and stewing.
The primary material for glass pot lids is tempered glass. Due to variations in manufacturer materials and craftsmanship, the maximum temperature tolerance differs. Generally, they won't shatter within a temperature range of 250°C to 320°C. Temperatures above 320°C may pose a risk of breakage.
II. Removing Burnt Residue from Glass Pots
1. Glass pots themselves do not burn; it is the burnt food that adheres to the surface. Therefore, soak thoroughly before washing—ideally for several hours before cleaning.
2. Use a scouring pad or kitchen cloth to clean the glass pot.
3. For stubborn burnt marks that won't brush off, sprinkle baking soda or soak in warm water mixed with white vinegar for a while before scrubbing clean.
4. For severely burnt interiors, pour in white vinegar water or baking soda water and bring to a boil. Turn off the heat and let it cool until it's safe to touch, then scrub while still warm.
5. Alternatively, extend the soaking time (e.g., one to two days) before using a stronger cleaning powder.
As seen, glass cookware is relatively safe and can withstand high temperatures. It typically won't shatter within the 250°C to 320°C range, though risks increase above 320°C. It's advisable to choose reputable brands and avoid uncertified products.