214396
Silica gel
high-purity grade (Davisil Grade 12), pore size 22 Å, 28-200 mesh
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About This Item
CAS Number:
EC Number:
MDL number:
UNSPSC Code:
23201100
PubChem Substance ID:
NACRES:
SB.52
grade
high-purity grade (Davisil Grade 12)
Quality Level
form
powder
manufacturer/tradename
Davisil®
technique(s)
LPLC: suitable
surface area
800 m2/g
matrix
Silica
matrix active group
silica
particle size
28-200 mesh
75-650 μm
pore size
0.43 cm3/g pore volume
22 Å
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 lresulting 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.
Suitable for chromatographic applications, especially hydrocarbon and steroid separations.
Legal Information
Davisil is a registered trademark of W.R. Grace & Co.-Conn.
Storage Class Code
11 - Combustible Solids
WGK
nwg
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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