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fine pored silica gel
[Character]Fine-pored silica gel includes fine-pored spherical silica gel and fine-pored lumpy silica gel. Narrow spherical silica gel is colorless or slightly yellow transparent or semitransparent granular in substance, narrow lumpy silica gel is colorless or slightly yellow transparent or semitransparent Irregular granular in substance. Fine-pored silica gel is also called Type-A silica gel.
[Use] Mainly used for drying and moisture proof, may also be used as catalyst carriers, adsorbents, separators and variable-pressure adsorbents, etc. Widely used to protecting instruments, weaponry, electronic equipment, medicine, foodstuff, textile products and other packed material from moisture. It can prevent items from moisture, mildewing and rusting. Because of its high packing density and effective moisture absorption under low humidity, it is used for the purification of air. Also it is often used in ocean shipment to keep goods from the damage caused by excessive humidity.
Average pore diameter: 2.0-3.0nm, Surface area: 650-800m2/g, Pore volume:0.35-0.45ml/g, Specific heat:0.92KJ/kg. 0, Thermal conductivity: 0.63 KJ/m. Hr. 0.
Specifications Typical Date
Superior class First class Qualifiied class
Adsorption capacity RH=20% 12min 10min 8min 11min
RH=50% 26min 24min 20min 25min
RH=90% 36min 32min 30min 37min
Loss on heating, %<= 2 5 6 4
PH value 4--8 4--8 4--8 4
Specific resistance, (Ohms) . cm 3000min 3000min 3000min 4000min
Silica % 98.5min 98min 98min 98.5min
Bulk density, g/l NA NA NA 780
[Size]narrow spherical silica gel: 0.5-1.5mm, 1-2mm, 1-3mm, 2-4mm, 3-5mm, 4-8mm
narrow lumpy silica gel: 0.5-1mm, 0.5-2mm, 1.5-4mm
[Package]25kg PP bag,25kg compound bag,500kg/800kg contain bag.
[Note] The moisture content, packing and size can be adjusted according to customers different requirements.