0
EINECS 编号 231-545-4
MDL number MFCD00011232
PubChem Substance ID 24881972
Same product — same quality — now Sigma-Aldrich brand
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 resulting in the formation of 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 is removed by supercritical extraction.
| grade | for thin layer chromatography |
| high-purity grade | |
| form | powder |
| quality | without calcium sulfate |
| mfr. no. | Sigma-Aldrich |
| particle size | 40 μm |
| >400 mesh | |
| pore size | 0.7-0.85 cm3/g pore volume |
| 60 Å pore size | |
| surface area | 470-530 m2/g |
| bp | 2230 °C |
| mp | >1600 °C |
温馨提示:因厂家更改产品包装、产地或者更换随机附件等没有任何提前通知，且每位咨询者购买情况、提问时间等不同，为此以下回复仅对提问者3天内有效，其他网友仅供参考！若由此给您带来不便请多多谅解，谢谢！
服务热线
0771-3293894
新浪微博
腾讯微博
QQ空间
客服
