391484
Silica gel
high-purity grade (7734), pore size 60 Å, 70-230 mesh
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About This Item
CAS Number:
EC Number:
MDL number:
UNSPSC Code:
12352309
PubChem Substance ID:
NACRES:
SB.52
Recommended Products
grade
high-purity grade (7734)
Quality Level
form
powder
manufacturer/tradename
EMD Millipore®
technique(s)
LPLC: suitable
surface area
550 m2/g
matrix
Silica
matrix active group
silica
particle size
63-200 μm
70-230 mesh
pore size
~0.8 cm3/g pore volume
60 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 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
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 as an adsorbent to separate compounds by chromatography. It was used to compare MCM-41 type mesoporous adsorbents.
It may be used in the synthesis of the following:
It may be used in the synthesis of the following:
- Silica gel-immobilized-dithioacetal derivatives.
- Piperazino silica reagent for removing 9-fluorenylmethyloxycarbonyl amino protecting group.
- Polysiloxanes silica hybrids.
Legal Information
EMD Millipore is a registered trademark of Merck KGaA, Darmstadt, Germany
Storage Class Code
11 - Combustible Solids
WGK
nwg
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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Piperazino-functionalized silica gel as a deblocking-scavenging agent for the 9-fluorenylmethyloxycarbonyl amino-protecting group.
Carpino LA, et al.
The Journal of Organic Chemistry, 48(5), 666-669 (1983)
Branched functionalised polysiloxane-silica hybrids for immobilisation of catalysts.
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Silica gel-immobilized-dithioacetal derivatives as potential solid phase extractors for mercury (II).
Mahmoud ME and Gohar GA.
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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.
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