60740

Silica gel Inorganic Sorbent

high-purity grade (puriss), 70-230 mesh

• CAS-Nummer: 112926-00-8
• EG-Nummer: 231-545-4
• MDL-Nummer: MFCD00011232
• UNSPSC-Code: 12352309
• PubChem Substanz-ID: 329759185
• NACRES: SB.52

Eigenschaften

• product name: Kieselgel, high-purity grade (puriss), pore size 60 Å, 70-230 mesh, for column chromatography
• Qualität: high-purity grade (puriss)
• Qualitätsniveau: 100
• Beschreibung: activity acc. to Brockmann and Schodder 2 - 3
• Form: powder
• Hersteller/Markenname: Sigma-Aldrich
• Methode(n): LPLC: suitable
• Oberflächenbereich: 500 m²/g
• Matrix: Silica
• Aktive Matrixgruppe: silica
• Partikelgröße: 63-200 μm; 70-230 mesh
• Porengröße: 0.8 cm³/g pore volume; 60 Å
• pH-Wert: 6.0-7.5 (25 °C, 10% in H₂O)
• bp: 2230 °C
• mp (Schmelzpunkt): >1600 °C
• Anionenspuren: chloride (Cl^-): ≤100 mg/kg; nitrate (NO₃^-): ≤50 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• Kationenspuren: Cu: ≤5 mg/kg; Fe: ≤20 mg/kg; Pb: ≤5 mg/kg; Zn: ≤5 mg/kg
• 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

Anwendung

Silica gel may be used in separation of single-walled carbon nanotube (SWNT) by simple filtration.

Sicherheitshinweise

• Lagerklassenschlüssel: 11 - Combustible Solids
• WGK: nwg
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable
• Persönliche Schutzausrüstung: Eyeshields, Gloves, type N95 (US)