The silica particles are irregular in shape and would not be considered spherical throughout.
288500
Silica gel
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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About This Item
CAS Number:
EC Number:
MDL number:
UNSPSC Code:
41115711
PubChem Substance ID:
NACRES:
NC.07
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grade
high-purity grade
Quality Level
form
powder
manufacturer/tradename
Sigma-Aldrich
technique(s)
thin layer chromatography (TLC): suitable
surface area
~500 m2/g
impurities
≤0.01% Fe3+
particle size distribution
2-22 μm
pore size
60 Å pore size
pH
~6.8 (10% in aq. suspension)
bp
2230 °C
mp
>1600 °C
anion traces
chloride (Cl-): ≤0.01%
SMILES string
O=[Si]=O
InChI
1S/O2Si/c1-3-2
InChI key
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
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1 of 4
This Item | 60741 | 288519 | 60737 |
|---|---|---|---|
| technique(s) thin layer chromatography (TLC): suitable | technique(s) LPLC: suitable | technique(s) thin layer chromatography (TLC): suitable | technique(s) LPLC: suitable |
| pore size 60 Å pore size | pore size 0.7-0.85 cm3/g pore volume, 60 Å average pore size (52-73 Å) | pore size 0.75 cm3/g pore volume, 60 Å medium pore diameter, 60 Å pore size | pore size 0.8 cm3/g pore volume, 60 Å |
| grade high-purity grade | grade high-purity grade | grade high-purity grade | grade high-purity grade |
| form powder | form powder or crystals | form powder | form powder |
| manufacturer/tradename Sigma-Aldrich | manufacturer/tradename Sigma-Aldrich | manufacturer/tradename Sigma-Aldrich | manufacturer/tradename Sigma-Aldrich |
| surface area ~500 m2/g | surface area 470-530 m2/g | surface area ~500 m2/g | surface area 530 m2/g |
General description
Silica gel is a rigid 3D network of colloidal silica.[1] 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.[2] 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[1]
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[1]
Application
Silica gel was used on glass plates to perform preparative thin layer chromatography.[3]
related product
Product No.
Description
Pricing
Storage Class
11 - Combustible Solids
wgk_germany
nwg
flash_point_f
Not applicable
flash_point_c
Not applicable
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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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