288519

Gel di silice

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

• Numero CAS: 112926-00-8
• Numero CE: 231-545-4
• Numero MDL: MFCD00011232
• Codice UNSPSC: 41115711
• ID PubChem: 24857347
• NACRES: NB.21

Proprietà

• Materiali: plastic support; silica gel 60 matrix
• Livello qualitativo: 100
• Grado: high-purity grade
• Forma fisica: powder
• Caratteristiche: binder Organic Polymer; fluorescent indicator: no
• Confezionamento: pkg of 250 g
• Produttore/marchio commerciale: Sigma-Aldrich
• tecniche: thin layer chromatography (TLC): suitable
• Area superficiale: ~500 m²/g
• Impurezze: ≤0.001% Fe³⁺
• Dimensione particelle: 5-25 μm
• Dimensione pori: 0.75 cm³/g pore volume; 60 Å medium pore diameter; 60 Å pore size
• pH: ~6.8 (10% in aq. suspension)
• P. eboll.: 2230 °C
• Punto di fusione: >1600 °C
• Anioni in tracce: chloride (Cl^-): ≤0.003%
• Stringa SMILE: O=[Si]=O
• InChI: 1S/O2Si/c1-3-2; VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Descrizione

Descrizione generale

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

Applicazioni

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

Informazioni sulla sicurezza

• Codice della classe di stoccaggio: 11 - Combustible Solids
• Classe di pericolosità dell'acqua (WGK): nwg
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable