Definition of food grade silica gel

The pore size of edible silica gel is about 8-10 nm, with a specific surface area of 300-500 m2/g. The surface is hydrophilic and has a strong water absorption ability. Under high humidity conditions, its water absorption can reach 80% to 100% of its own weight. Therefore, food grade silica gel can be used as an external drying agent for food and medicine. Because edible silica gel is refined and sterilized, it can be mixed with food and drugs as needed to directly ensure the dryness of the food and consumed together with the food, without any toxic and side effects on the human body.