346446
Silica gel Inorganic Sorbent
high-purity grade (7749), 360-2500 mesh
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A propos de cet article
Numéro CAS:
UNSPSC Code:
12352309
PubChem Substance ID:
NACRES:
NB.21
EC Number:
231-545-4
MDL number:
Service technique
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Gel de silice, high-purity grade (7749), with gypsum binder and fluorescent indicator, suitable for thin layer chromatography (TLC)
grade
high-purity grade (7749)
Quality Level
form
powder
manufacturer/tradename
EMD Millipore®
technique(s)
LPLC: suitable, thin layer chromatography (TLC): suitable
matrix
Silica
matrix active group
silica
particle size
5-40 μm
pore size
- cm3/g pore volume, 60 Å pore size
bp
2230 °C
mp
>1600 °C
separation technique
hydrophilic interaction (HILIC)
SMILES string
O=[Si]=O
InChI
1S/O2Si/c1-3-2
InChI key
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
General description
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 fragmentationresultibng 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
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
Application
Silica gel was used to compare MCM-41 type mesoporous adsorbents.
Legal Information
EMD Millipore is a registered trademark of Merck KGaA, Darmstadt, Germany
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Classe de stockage
11 - Combustible Solids
wgk
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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T Martin et al.
Chemical communications (Cambridge, England), (1)(1), 24-25 (2002-07-18)
Texture-related features of water intrusion in hydrophobised MCM-41 silicas render these materials especially suitable for energy dissipation in mechanical dampers.
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)