53698

Silica gel Inorganic Sorbent

spherical, 200-360 mesh

• Synonym(e): Silica gel
• CAS-Nummer: 112926-00-8
• EG-Nummer: 231-545-4
• MDL-Nummer: MFCD00011232
• UNSPSC-Code: 23201100
• PubChem Substanz-ID: 329757970
• NACRES: SB.52

Eigenschaften

• product name: Kieselgel, 40-75 μm particle size
• Qualität: high-purity grade
• Form: powder
• Hersteller/Markenname: Sigma-Aldrich
• Methode(n): LPLC: suitable
• Oberflächenbereich: 450-550 m²/g
• Verlust: ~5% loss on drying
• Matrix: Silica
• Aktive Matrixgruppe: silica
• Partikelgröße: 200-400 mesh; 40-75 μm
• Porengröße: 0.7-0.9 cm³/g pore volume; 60 Å pore size
• pH-Wert: ~7 (5% in H₂O, suspension)
• bp: 2230 °C
• mp (Schmelzpunkt): >1600 °C
• Trenntechnik: hydrophilic interaction (HILIC)
• 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. Silica gel allows a controlled fragmentation leading to form 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.

Sicherheitshinweise

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