288519

Gel de silice

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

• Numéro CAS: 112926-00-8
• Numéro CE : 231-545-4
• Numéro MDL: MFCD00011232
• Code UNSPSC : 41115711
• ID de substance PubChem : 24857347
• Nomenclature NACRES : NB.21

Propriétés

• Matériaux: plastic support; silica gel 60 matrix
• Niveau de qualité: 100
• Qualité: high-purity grade
• Forme: powder
• Caractéristiques: binder Organic Polymer; fluorescent indicator: no
• Conditionnement: pkg of 250 g
• Fabricant/nom de marque: Sigma-Aldrich
• Technique(s): thin layer chromatography (TLC): suitable
• Superficie: ~500 m²/g
• Impuretés: ≤0.001% Fe³⁺
• Taille des particules: 5-25 μm
• Dimension de pores: 0.75 cm³/g pore volume; 60 Å medium pore diameter; 60 Å pore size
• pH: ~6.8 (10% in aq. suspension)
• Point d'ébullition: 2230 °C
• Pf: >1600 °C
• Traces d'anions: chloride (Cl^-): ≤0.003%
• Chaîne SMILES: O=[Si]=O
• InChI: 1S/O2Si/c1-3-2
• Clé InChI: VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Description

Description générale

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

Application

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

Informations sur la sécurité

• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): nwg
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable