Silica Gel White Description

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.

Thus the higher the humidity of the surrounding air, the greater the amount of water that is adsorbed before equilibrium is reached. It is in these higher humidity conditions (above 50% Relative Humidity) that stored or in-transit items are susceptible to damage. 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.Silica gel is one of the oldest and most popular desiccant and adsorbent used for a wide number of industrial and consumer applications

Technical Parameter:

Descriptions	SILICA - GEL WHITE
Shape  / Sizes	Irregular  or Spherical
Assay (as SiO2)	Min 98%
PH	4 - 8
Bulk Density    g/ml	0.55-0.65
Loss on Drying %	<6
Adsorption Capacity @ 100% humidity	38-40
Friability	99.5
Choloride (as NaCl)	Max 0.5%
Cobalt (as cobalt chloride)	NIL
Sulfates (Na2SO4)	Max 0.5%
Particle sizes (Mesh)	1-3,3-4,3-8,5-8,9-16 16-30 30-100

Applications

Drying and cleaning of air and gases.
Drying of analytical sample.
Drying of solvents.
Drying of synthesis products.
Optical instruments and devices.
Protection of Export Consignments from moisture in salty atmosphere.
Drying and storage of Flowers and Seeds