28 Congress Circle W.
Roselle, IL 60172
Phone: 630.980.5205
Roselle, IL 60172
Phone: 630.980.5205
Blue Indicating Silica Gel Beaded 2-5mm
CHEMICAL FORMULA SiO2 · nH2O + CoCl2
PRODUCT DESCRIPTION
DelSORB® SGBIB 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.
Typical Properties
| Property | Value |
| Particle Size (mm) | 2 – 5 |
| Nominal Pore Opening (Angstroms) | 20 – 30 |
| Color Change (Indication) | Blue to Pink |
| pH(Slurry) | ≈ 7 |
| 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 |
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® SGBIB Blue 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