Characteristics：
Color: transparent or translucent, glass-like.
Chemical molecular formula: SiO2.nH2O.
Fast adsorption, quick deadsorpton.
Chemically stable, Nontoxic, tasteless, Similar to fine-pored silica gel.
Its selective adsorptive capability is higher than fine-pored silica gel. 
Use：
Variable-pressure adsorption（PSA） is a kind of new high-technology used for gas separation and purifying. Mainly used for the recovery, separation and purifying of carbon dioxide gas. It is used for preparation of carbon dioxide in synthetic ammonia industry, food & beverage processing industry, etc. It may also be used for drying, moisture absorption as well as dewatering of organic products.

Technical Data：

ITEM		Specifications (2-5mm)	Mensuration range
			Silica Gel for Variable-Pressure Adsorption	Fine-pored Silica Gel
Adsorption Capacity	RH=20%，≥	10.0	12-14	10-12
	RH=50%，≥	24.0	28-30	25-27
	RH=90%，≥	35.0	37-40	36-38
size（mm)		1-5	1-3 1-4	1-3 2-4 3-5
Bulk density, g/ml ≥		0.75	0.78	0.75
SiO2 %≥		98.0	98.5	98.0
rattler loss % ≤		5.0	0.9	1.2
specific surface area ㎡/g≥		600	750	600
CO2 Adsorption Capacity ml/g≥		20.0	26	－
Qualified ratio of spherical granules, % ≥		82	95	95

[Sizes] 1—3mm, 2—5mm。 [Packing]  25kg per compound bag. [Notes]  1.Packing and size may be customized per your specific requirements. 2. This product is manufactured under the supervision of Southwest Chemical Research Institute。