半岛bd体育手机客户端 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

应用

It has been used for the solid phase extraction (SPE) fractionation of organohalogen compounds in biological organ tissues. Silica gel column may be employed for the clean-up procedures in multiresidue methods of pesticide analyses and as a support for the fabrication of pentachlorophenol (PCP)-imprinted functionalized sorbents for the analysis of trace pentachlorophenol in water samples by SPE combined with high performance liquid chromatography (HPLC).
Silica gel may be used in separation of single-walled carbon nanotube (SWNT) by simple filtration.

基本信息

EC 号	231-545-4
MDL编号	MFCD00011232
PubChem化学物质编号	329759180
NACRES	SB.52

半岛bd体育手机客户端 性质

质量水平	100
等级	for column chromatography high-purity grade
形式	powder or crystals
technique(s)	LPLC: suitable
基质	Silica
基质活性基团	silica
粒径	0.2-0.5 mm (35-70 mesh ASTM) 35-70 mesh
孔径	90 ? mean pore size
表面积	350 m2/g
bp	2230 ℃
mp	>1600 ℃
分离技术	hydrophilic interaction (HILIC)
储存温度	2-8℃
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
个人防护装备	Eyeshields, Gloves, type N95 (US)