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Silica gel
high-purity grade, with ~15% calcium sulfate and fluorescent indicator, GF254, suitable for thin layer chromatography (TLC)
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About This Item
Numer CAS:
Numer WE:
Numer MDL:
Kod UNSPSC:
41115711
Identyfikator substancji w PubChem:
NACRES:
NC.07
Polecane produkty
klasa czystości
high-purity grade
Poziom jakości
Postać
powder
jakość
with ~15% calcium sulfate and fluorescent indicator
producent / nazwa handlowa
Sigma-Aldrich
metody
thin layer chromatography (TLC): suitable
powierzchnia
500 m2/g
wielkość cząstki
<20 μm
>632 mesh
wielkość porów
0.8 cm3/g pore volume
60 Å pore size
tw
2230 °C
mp
>1600 °C
ciąg SMILES
O=[Si]=O
InChI
1S/O2Si/c1-3-2
Klucz InChI
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
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Opis ogólny
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 is 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 is removed by supercritical extraction
Zastosowanie
- Chromatographic Separation: Silica gel is widely used as a stationary phase in chromatography for the separation of various chemical compounds. Innovations in silica gel modification, such as pentabromobenzyl group-modified silica gel, have enhanced the separation efficiency for metabolites like nicotinamide. This application is critical for pharmaceutical analysis and metabolomics studies, providing high precision and accuracy in the quantification of biologically relevant molecules (Ozaki et al., Analytical Biochemistry, 2022).
- Environmental Pollutant Detection: Silica gel is used to create molecularly imprinted polymers (MIPs) that selectively recognize and bind environmental pollutants. A notable application involves the embedding of quantum dots in molecularly imprinted silica gel to detect aminoimidazo-azaarenes (AIAs) in food samples. This method offers high selectivity and sensitivity, making it a powerful tool for food safety and environmental monitoring (Qiao et al., Current Analytical Chemistry, 2021).
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Kod klasy składowania
11 - Combustible Solids
Klasa zagrożenia wodnego (WGK)
nwg
Temperatura zapłonu (°F)
Not applicable
Temperatura zapłonu (°C)
Not applicable
Środki ochrony indywidualnej
Eyeshields, Gloves, type N95 (US)
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