28 Congress Circle W.
Roselle, IL 60172
Phone: 630.980.5205

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