Blue Indicating Silica Gel Granular
CHEMICAL FORMULA SiO2 · nH2O + CoCl2
PRODUCT DESCRIPTION
DelSORB® SGBIG Blue indicating 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.
SPECIFICATIONS
| Property |
Value |
Unit |
| Granular Size |
1.5 - 3.0 |
mm |
| Nominal Pore Opening |
20 - 30 |
Angstroms |
| Color Change |
Blue to Pink |
Indication |
| pH(Slurry) |
≈ 7 |
pH |
| Water Adsorption Capacity |
|
|
| 20% |
≥ 11 |
% Weight |
| 40% |
≥ 22 |
% Weight |
| 80% |
≥ 33 |
% Weight |
| Bulk Density |
≥ 780 |
g/l |
| |
≥ 48 |
lbs/ft3 |
| Size Qualification |
≥ 97 |
% |
| Package Moisture |
≤ 1.5 |
% Weight |
TYPICAL APPLICATIONS
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
Outline in our Current Safety Data Sheet - Click Here