White Silica Gel

Material Description : Glass, har, irrgualr shaped granules with a very high purity of approx. 99.5% SiO2 (Dry basis) and an internal surface area of approx. 800 m2 ­­­­­­­/g. Because of its very large surface area Silica gel exhibits a high adsorption for water vapour. Silica gel can be reactivated without significantly impairing the efficiency. It is therefore very economical, easy to dispose of and without any known adverse effects on the evironment. Supplied as desiccant absorbent, silica gel conforms to US MIL-D3716, BS-2540, DIN 55473. Formula : SiO2.n(H2O) - amorphous form of silica. CAS-Nr. : 7631-86-9. Physical : Typical water vapour adsorption capacity at 25 0C. Characteristics : at 20% relative humidity >= 10.7% at 40% relative humidity >= 22.3% at 80% relative humidity >= 32.5% Loss on ignition (1200C) (on dry basis) max. 3% Bulk density >= 780 PH value 4-7 Specific resistance >= 3,000
Standard grain size : 1.0 - 2.0 mm, 1.0 - 3.0 mm, 2.0 - 4.0 mm, 4.0 - 8.0 mm. Other special gradings on request.
Applications : Due to its extremely high adsorptive capacity Silica gel has a multitude of uses; Static adsorption (=removal of moisture and control of humidity in packing and other enclosed spaces without induced air flow). Dynamic adsorption (=removal of water from a continuously flowing gas or liquid stream). The temperature at reactivation should not exceed 200 0C.
Packaging : Packaged from 0.5 gram up to 500 grams by paper or nonwoven; airtight in PE barriers and carton.
Handing : Silica gel desiccant must always be kept in airtight containers to avoid pre-adsorption with water vapour. Face masks should be used at continual exposure to extensive dusting.