288519

Kieselgel

high-purity grade, pore size 60 Å, 5-25 μm particle size, without binder, suitable for thin layer chromatography (TLC)

• CAS-Nummer: 112926-00-8
• EG-Nummer: 231-545-4
• MDL-Nummer: MFCD00011232
• UNSPSC-Code: 41115711
• PubChem Substanz-ID: 24857347
• NACRES: NB.21

Eigenschaften

• Materialien: plastic support; silica gel 60 matrix
• Qualitätsniveau: 100
• Qualität: high-purity grade
• Form: powder
• Leistungsmerkmale: binder Organic Polymer; fluorescent indicator: no
• Verpackung: pkg of 250 g
• Hersteller/Markenname: Sigma-Aldrich
• Methode(n): thin layer chromatography (TLC): suitable
• Oberflächenbereich: ~500 m²/g
• Verunreinigungen: ≤0.001% Fe³⁺
• Partikelgröße: 5-25 μm
• Porengröße: 0.75 cm³/g pore volume; 60 Å medium pore diameter; 60 Å pore size
• pH-Wert: ~6.8 (10% in aq. suspension)
• bp: 2230 °C
• mp (Schmelzpunkt): >1600 °C
• Anionenspuren: chloride (Cl^-): ≤0.003%
• SMILES String: O=[Si]=O
• InChI: 1S/O2Si/c1-3-2
• InChIKey: VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Beschreibung

Allgemeine Beschreibung

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. It 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 removed by supercritical extraction

Anwendung

Silica gel was used on glass plates to perform preparative thin layer chromatography.

Sicherheitshinweise

• Lagerklassenschlüssel: 11 - Combustible Solids
• WGK: nwg
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable