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EINECS 编号 231-545-4
MDL number MFCD00011232
PubChem Substance ID 24854194
1 kg in poly bottle
100 g in poly bottle
Silica gel is a rigid 3D network of colloidal silica. It is exclusively used as a support material for the active titanium (III) centers in Ziegler-Natta catalysts. Silica gel allows a controlled fragmentation leading to form uniform polymer particles with narrow particle size distribution and high bulk density. Silica gel is classified as below:
a. Aquagel - pores are filled with water
b. Xerogel - by the process of evaporation, aqueous phase in the pores are removed
c. Aerogel - solvent removed by supercritical extraction.
Davisil is a registered trademark of W.R. Grace & Co.-Conn.
| grade | high-purity grade (Davisil Grade 646) |
| assay | ≥99% |
| form | powder |
| mfr. no. | Davisil® |
| particle size | 250-500 μm |
| 35-60 mesh | |
| pore size | 1.15 cm3/g pore volume |
| 150 Å | |
| surface area | 300 m2/g |
| pH | 7.0 (5% in slurry) |
| bp | 2230 °C |
| mp | >1600 °C |
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