288519

Gel de sílica

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

• Número CAS: 112926-00-8
• Número CE: 231-545-4
• Número MDL: MFCD00011232
• Código UNSPSC: 41115711
• ID de substância PubChem: 24857347
• NACRES: NB.21

Propriedades

• Materiais: plastic support; silica gel 60 matrix
• Nível de qualidade: 100
• grau: high-purity grade
• forma: powder
• Características: binder Organic Polymer; fluorescent indicator: no
• embalagem: pkg of 250 g
• fabricante/nome comercial: Sigma-Aldrich
• técnica(s): thin layer chromatography (TLC): suitable
• área da superfície: ~500 m²/g
• Impurezas: ≤0.001% Fe³⁺
• tamanho de partícula: 5-25 μm
• tamanho de poro: 0.75 cm³/g pore volume; 60 Å medium pore diameter; 60 Å pore size
• pH: ~6.8 (10% in aq. suspension)
• pb: 2230 °C
• pf: >1600 °C
• traços de ânion: chloride (Cl^-): ≤0.003%
• cadeia de caracteres SMILES: O=[Si]=O
• InChI: 1S/O2Si/c1-3-2
• chave InChI: VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Descrição

Descrição geral

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

Aplicação

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

Informações de segurança

• Código de classe de armazenamento: 11 - Combustible Solids
• Classe de risco de água (WGK): nwg
• Ponto de fulgor (°F): Not applicable
• Ponto de fulgor (°C): Not applicable