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 regular beads. A microporous structure of interlocking cavities gives a very high surface area (800 square meters per gram). It is this structure that makes silica gel a high capacity desiccant. Water molecules adhere to the gels surface because it exhibits a lower vapour pressure than the surrounding air. When an equilibrium of equal pressure is reached,no more adsorption occurs.
Silica Gel can adsorb up to 40% of its weight in moisture and has the highest absorption capacity of any commercially used desiccant. Our loose white silica gel beads are non-indicating, inert and non toxic.
Silica Gel is used where processes and products need to be protected from the negative consequences of humidity and moisture: such as:
Breathing filter for electric transformers
Silos and storage tanks
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