60765

Gel de sílice

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

• Número de CAS: 112926-00-8
• Número CE: 231-545-4
• Número MDL: MFCD00011232
• Código UNSPSC: 41115711
• ID de la sustancia en PubChem: 329759214
• NACRES: NC.07

Propiedades

• grado: high-purity grade
• Nivel de calidad: 100
• formulario: powder
• calidad: with ~15% calcium sulfate and fluorescent indicator
• fabricante / nombre comercial: Sigma-Aldrich
• técnicas: thin layer chromatography (TLC): suitable
• superficie: 500 m²/g
• tamaño de partícula: <20 μm; >632 mesh
• tamaño de poro: 0.8 cm³/g pore volume; 60 Å pore size
• bp: 2230 °C
• mp: >1600 °C
• cadena SMILES: O=[Si]=O
• InChI: 1S/O2Si/c1-3-2
• Clave InChI: VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Descripción

Descripción general

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

Aplicación

• 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).

Información de seguridad

• Código de clase de almacenamiento: 11 - Combustible Solids
• Clase de riesgo para el agua (WGK): nwg
• Punto de inflamabilidad (°F): Not applicable
• Punto de inflamabilidad (°C): Not applicable
• Equipo de protección personal: Eyeshields, Gloves, type N95 (US)