CHEMICAL FORMULA SiO2 · nH2O + CoCl2
DelSORB® SGBIB13 silica gel is the naturally occurring mineral silicon dioxide that has been purified and processed into a hard, smooth beaded form. The beads are then saturated with a moisture indicating solution that gives them a deep blue color when dry. It is also known as a narrow pore silica gel and has a vast network of interconnecting pores with diameters of 20-30Å. These pores have a strong affinity for moisture and use physical adsorption and capillary condensation to trap and hold it. Silica gel will remove moisture at temperatures as high as 220°F, but is best used at room temperature (70-90°F) and high relative humidity (60-90%Rh). The color changes from blue to purple to pink as it adsorbs moisture.
|Particle Size (mm)||1 – 3|
|Nominal Pore Opening (Angstroms)||20 – 30|
|Color Change (Indication)||Blue to Pink|
|Water Adsorption Capacity|
|Water Adsorption Capacity @20% RH, 25ºC* (wt%)||≥ 8|
|Water Adsorption Capacity @35% RH, 25ºC* (wt%)||≥ 13|
|Water Adsorption Capacity @50% RH, 25ºC* (wt%)||≥ 20|
|Bulk Density (g/l)||≥ 750|
|Bulk Density (lb/ft3)||≥ 46|
|Size Qualification (%)||≥ 97|
|Package Moisture (wt%)||≤ 2|
As a primary desiccant or blended with other desiccants in any application where visual control of moisture is required, such as compressed air dryers, gas drying, breathers, for protection of non-consumable packaged goods, drying and storage of flowers and seeds, etc. Due to the addition of the moisture indicator, DelSORB® AB25B Indicating Silica Gel should not be used in contact with products intended for consumption such as food or pharmaceuticals.
HANDLING & STORAGE RECOMMENDATIONS
Currrent SDS – Health and Safety Information is available here.