High adsorption capacity, high mechanical strength — the industry-standard narrow pore desiccant.
Silica Gel
Type A Silica Gel (Narrow Pore Silica Gel)
Description
Type A silica gel, also known as narrow pore silica gel, is supplied as transparent to translucent particles in spherical or block form. Main component SiO2·nH2O. Insoluble in water and inorganic acid; soluble in hydrofluoric acid and concentrated caustic soda solution. High mechanical strength and good wear resistance.
Structure & key data: Pore volume 0.35–0.5 ml/g · Pore size 20–40 Å · Specific surface area ≥600 m²/g
Applications
Drying industrial gases such as air, oxygen, hydrogen and organic gases
Moisture-proof protection for instruments, electrical appliances, textiles, food, medicine, clothing, footwear and containers
Dehydration and refining of organic products
Air humidity regulation
Adsorption of flammable and explosive gases such as acetylene from compressed air
Technical Specifications
Property
Spherical
Block
Adsorption capacity RH20% (%)
≥ 8
≥ 8
Adsorption capacity RH50% (%)
≥ 20
≥ 20
Adsorption capacity RH90% (%)
≥ 30
≥ 30
Bulk density (g/l)
≥ 720
≥ 670
Loss on heating (%)
On agreement
On agreement
Particle size (mm)
On agreement
On agreement
SiO2 content (%)
≥ 98
≥ 98
Qualified size ratio (%)
≥ 90
≥ 90
📦
Packaging
Woven bag, 25 kg. Other packaging available on request.
🌡️
Storage
Store in a dry, ventilated place. Keep sealed against moisture.
