Silica gel

SIAL/60765 - high-purity grade, with ~15% calcium sulfate and fluorescent indicator, GF₂₅₄, suitable for thin layer chromatography (TLC)

CAS Number: 7631-86-9
EC Number: 231-545-4
MDL Number: MFCD00011232
Product Type: Chemical

Catalog Number	PKG Qty.	Price


45-60765-1KG	1 kg	$181.00 1/EA	Add To Favorites

Properties
Descriptions
Safety Info.
Basic Data

bp	2230 °C
form	powder
grade	high-purity grade
InChI	1S/O2Si/c1-3-2
InChI key	VYPSYNLAJGMNEJ-UHFFFAOYSA-N
manufacturer/tradename	Sigma-Aldrich
mp	>1600 °C
particle size	>632 mesh
	<20 μm
pore size	0.8 cm³/g pore volume
	60 Å pore size
quality	with ~15% calcium sulfate and fluorescent indicator
Quality Level	100
SMILES string	O=[Si]=O
surface area	500 m²/g
technique(s)	thin layer chromatography (TLC): suitable

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

RIDADR	NONH for all modes of transport
WGK Germany	nwg
Flash Point(F)	Not applicable
Flash Point(C)	Not applicable

bp	2230 °C
mp	>1600 °C
UNSPSC	41115711

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