Absorbent & Desiccant Products are the substitute for Silica gel. Silica gel is an amorphous form of silicon dioxide, which is synthetically produced in the form of hard irregular granules (having the appearance of crystals) or hard irregular beads. It is this structure that makes silica gel a high capacity desiccant. The internal structure of silica gel is composed of a vast network of interconnected microscopic pores which attract and hold water, alcohols, hydrocarbons and other chemicals by the phenomena known as physical adsorption and capillary condensation. The beauty of silica gel is the physical adsorption of water vapour into its internal pores. There is no chemical reaction, no by products or side effects. Even when saturated with water vapour, silica gel still has the appearance of a dry product, its shape unchanged.