60742
Silica gel
high-purity grade, 60Å, 35-60 mesh particle size
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About This Item
CAS Number:
EC Number:
MDL number:
UNSPSC Code:
23201100
PubChem Substance ID:
NACRES:
SB.52
Recommended Products
grade
high-purity grade
Quality Level
description
activity acc. to Brockmann and Schodder 2 - 3
form
powder or crystals
manufacturer/tradename
Sigma-Aldrich
technique(s)
LPLC: suitable
surface area
500 m2/g
matrix
Silica
matrix active group
silica
particle size
200-500 μm
35-60 mesh
pore size
0.8 cm3/g pore volume
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
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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 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
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 may be used in separation of single-walled carbon nanotube (SWNT) by simple filtration.
Storage Class
11 - Combustible Solids
wgk_germany
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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Christopher A Dyke et al.
Journal of the American Chemical Society, 127(12), 4497-4509 (2005-03-24)
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