What is silica jell?

Answer 1

Silica gel packets are dessicants. These packets adsorb moisture and prevent damage to stored valuables and supplies. Silica gel is silicon dioxide, SiO2, like sand on the beach. Inside each small silica gel granule is a network of inter-connecting microscopic pores, which attract and hold moisture by a phenomena known as adsorption. Silica gel is packaged in a fibrous material that is capable of withstanding normal handling and be able to breathe. This means that water molecules can pass through the material and be adsorbed by the silica gel. Ready to use silica gel is blue in colour. When the silica gel has soaked up a lot of moisture, the silica gel turns to pink. Once the silica gel turns pink it cannot adsorb any more moisture. It needs to be regenerated. This can be accomplished by heating it in an oven. The heat expels the moisture, the silica gel turns blue and becomes reusable.