产品说明
一般描述
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.
基本信息
| EC 号 | 231-545-4 |
| MDL编号 | MFCD00011232 |
| PubChem化学物质编号 | 329757970 |
| NACRES | SB.52 |
产品性质
| 质量水平 | 100 |
| 等级 | high-purity grade |
| 形式 | powder |
| manufacturer/tradename | sigma-aldrich |
| technique(s) | LPLC: suitable |
| 缺失 | ~5% loss on drying |
| 基质 | Silica |
| 基质活性基团 | silica |
| 粒径 | 200-400 mesh 40-75 μm |
| 孔径 | 0.7-0.9 cm3/g pore volume 60 Å pore size |
| 表面积 | 450-550 m2/g |
| pH值(酸碱度) | ~7 (5% in H2O, suspension) |
| bp | 2230 ℃ |
| mp | >1600 ℃ |
| 分离技术 | hydrophilic interaction (HILIC) |
| SMILES string | O=[Si]=O |
| InChI | 1S/O2Si/c1-3-2 |
| InChI key | VYPSYNLAJGMNEJ-UHFFFAOYSA-N |
安全信息
| 储存分类代码 | 11 - Combustible Solids |
| WGK | nwg |
| 闪点(F) | Not applicable |
| 闪点(C) | Not applicable |
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