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Merck

60765

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

CAS Number:
7631-86-9
NACRES:
NC.07
PubChem Substance ID:
329759214
UNSPSC Code:
41115711
EC Number:
231-545-4
MDL number:
MFCD00011232

Key Documents

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Product Name

Silica gel, high-purity grade, with ~15% calcium sulfate and fluorescent indicator, GF254, suitable for thin layer chromatography (TLC)

InChI key

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

InChI

1S/O2Si/c1-3-2

SMILES string

O=[Si]=O

grade

high-purity grade

form

powder

quality

with ~15% calcium sulfate and fluorescent indicator

manufacturer/tradename

Sigma-Aldrich

technique(s)

thin layer chromatography (TLC): suitable

surface area

500 m2/g

particle size

<20 μm
>632 mesh

pore size

0.8 cm3/g pore volume
60 Å pore size

bp

2230 °C

mp

>1600 °C

Quality Level

100

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Related Categories

Application


  • 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).

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 is removed by supercritical extraction

Storage Class

11 - Combustible Solids

wgk

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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Certificates of Analysis (COA)

Lot/Batch Number
BCCL5670
BCCK0656
BCCC6590
BCCC5091
BCCB3345

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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.
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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