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288500

硅胶

Name: 硅胶
Brand: SIAL

high-purity grade, pore size 60 Å, 2-22 μm particle size distribution, without binder, suitable for thin layer chromatography (TLC)

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CAS号:

EC 号:

MDL编号:

PubChem化学物质编号:

NACRES:

NC.07

等级

high-purity grade

质量水平

100

形式

powder

manufacturer/tradename

Sigma-Aldrich

technique(s)

thin layer chromatography (TLC): suitable

表面积

~500 m²/g

杂质

≤0.01% Fe³⁺

粒径分布

2-22 μm

孔径

60 Å pore size

pH值（酸碱度）

~6.8 (10% in aq. suspension)

bp

2230 °C

mp

>1600 °C

痕量阴离子

chloride (Cl^-): ≤0.01%

SMILES string

O=[Si]=O

InChI

1S/O2Si/c1-3-2

InChI key

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

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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. It 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 removed by supercritical extraction

应用

Silica gel was used on glass plates to perform preparative thin layer chromatography.

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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示例

T1503

货号

25G

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705578-5MG-PW

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Evidence of Phytoalexins in Cucumber Leaves Infected with Powdery Mildew following Treatment with Leaf Extracts of Reynoutria sachalinensis.

F. Daayf et al.

Plant physiology, 113(3), 719-727 (1997-03-01)

Phenolic compounds extracted from cucumber (Cucumis sativus L.) leaves were separated and analyzed for their differential presence and fungitoxicity in relation to a prophylactic treatment with Milsana (Compo, Munster, Germany) against powdery mildew (Sphaerotheca fuliginea). Based on our extraction and

A simple method for production of pure silica from rice hull ash

Kalapathy, U., A. Proctor, and J. Shultz.

Bioresource Technology, 73, 257-262 (2000)

Silica gel supported zirconocene dichloride/methylalumoxane catalysts for ethylene polymerization: Effects of heterogenation on activity, polymer microstructure and product morphology.

Janiak, Christoph, and Bernhard Rieger.

Angew. Makromol. Chem., 215, 47-57 (1994)

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硅胶