Blue Indicating Silica Gel

sSORB® blue silica gel is ideal as a primary desiccant or blended with other desiccants in any application where visual control of moisture is required. sSORB silica gel beads are saturated with a moisture indicating solution that gives them a deep blue color when dry. The color changes from blue to purple to pink as it adsorbs moisture.

Chemical Formula:  SiO2 · nH2O + CoCl2

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Product Data Sheet:

Product Safety Data Sheet:



Also known as a narrow pore silica gel, sSORB has a vast network of interconnecting pores with diameters of 20-30 Å. 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).

Blue Indicating Silica Gel Typical Applications

Blue indicating silica gel is frequently used with:

Additional Information

Due to the addition of the moisture indicator, sSORB® Blue Silica Gel should not be used in contact with products intended for consumption such as food or pharmaceuticals.

Product Type Size
sSORB® AB25B A 2-5 mm
sSORB® AB35B A 3-5 mm

Additional information


Store aSORB® blue silica gel in a dry location to prevent unintentional water adsorption. Do not store super sacks outside; ultraviolet radiation and other adverse conditions will negatively impact its integrity and may eventually cause the bag to fail. Reseal packages after opening to prevent contamination and unintended water adsorption. We recommend that you rotate stock so the oldest material is used first.

Safety and Handling

Health and safety information is available on our sSORB® Blue Silica Gel product SDS or by contacting Interra Global at 847.292.8600.

Packaging Information

Available in 55 lb (25 kg) bags and drums and super-sacks filled to order.