HYSG-2SILICAGEL small porous, white, beads

Glassy, hard beads with a very high purity of approx. 99.5 % SiO2 (dry basis) and an internal surface area of approx. 800m2/g. Because of its very large surface area, SG-2 exhibits a high adsorption for water vapour. SG-2 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 environment.

Formula :SiO2. n (H2O) (amorphous form of silica)

CAS-No.:7631-86-9

Physical and chemical    
Typical water vapour adsorption capacity (at 25°C)

Characteristics          
at 20 % RH min. 10.5 %

at 50 % RH min. 23.0 %

at 90 % RH min. 34.0 %

Moisture loss (140 °C)   max. 2.0 %

Bulk density  680 – 800 g/l

Standard grain sizes   
0.2 – 1.0 mm

0.5 – 1.6 mm

1.0 – 3.15 mm

2.5 – 4.0mm

3.0 – 6.0 mm

Other special gradings on request

Applications         
Due to its extremely high adsorptive capacity SG-2 beads

have a multitude of uses: Static adsorption (=removal of

moisture and control of humidity in packaging and other

enclosed spaces without induced air flow). The temperature of reactivation should not exceed 180 °C.

Packing             
Airtight in 25 kg – bags,cartons, reconditioned 150 kg

steel drums or 1000 kg-bulk bags with PE-Inliner.

Handling           
SG-2 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.

Note                 
Any details of application possibilities do not free the purchaser from  

he obligation of performing his own tests on the material supplied by the seller, in order to determine their suitability for the intended rocesses and purposes. Application, use and processing of the material cannot be controlled by the seller and are thus the sole responsibility of the purchaser.