Narrow Pore Silica Gel (A-type silica gel)
【Characteristics】
Narrow Pore Silica Gel includes spherical silica gel and lump silica gel. The narrow pore silica gel is transparent or semitransparent. The narrow pore silica gel is also called Type A silica gel.
Average diameter:2.0-3.0 nm.
Specific surface area: 650-800 m2 / g.
Pore volume: 0.35-0.45 ml / g.
Specific heat:0.92 KJ / kg. ℃.
Thermal conductivity coefficient : 0.63 KJ / m. Hr.℃
【Use】
Mainly used as desiccants to prevent items from moisture, it is also can used as catalyst carrier, adsorbent, separating agent and the raw material to produce PSA and Silica gel with moisture indicator.
【Sizes】
0.5-1mm、0.5-1.5mm、1-2mm、1-3mm、2-4mm、2-5mm、3-5mm、4-8mm etc.
【Packing】
N.W 25KG per bag or 900KG per bag.
【Note】
The moisture content, packing and size can be customized according to the customer's requirements.
Item | Specification | Typical Value | |||
Adsorption capacity | Superior class | First class | Qualified class | ||
RH=20% | 10.5min | 10min | 8min | 11.2min | |
RH=50% | 25min | 23min | 22min | 29.2min | |
RH=90% | 34min | 33min | 32min | 37.6min | |
Loss on heating，% | 2.0 | 4.0 | 6.0 | 1.0 | |
PH value | 4--8 | 4--8 | 4--8 | 5.6 | |
Specific resistance，Ω.cm | 5000min | 3000min | 3000min | 4211min | |
Silica % | 98.5min | 98min | 98min | 98.5min | |
Qualified ratio of spherical granules % | 95 | 90 | 80 | 90 | |
Size | Negotiation | Negotiation | Negotiation | 2-5mm | |
Bulk density, g/l | 700-850 | 784 | |||
Note: The qualified ratio of spherical granules is only applicable to spherical silica gel. | |||||
