288519

Silica gel

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

• CAS-szám: 112926-00-8
• EC-szám: 231-545-4
• MDL-szám: MFCD00011232
• UNSPSC kód: 41115711
• PubChem Substance ID: 24857347
• NACRES: NB.21

Tulajdonságok

• material: plastic support; silica gel 60 matrix
• Minőségi szint: 100
• grade: high-purity grade
• Forma: powder
• Jellemzők: binder Organic Polymer; fluorescent indicator: no
• kiszerelés: pkg of 250 g
• gyártó/kereskedő neve: Sigma-Aldrich
• technika/technikák: thin layer chromatography (TLC): suitable
• külső felület: ~500 m²/g
• szennyeződések: ≤0.001% Fe³⁺
• részecskeméret: 5-25 μm
• pórusméret: 0.75 cm³/g pore volume; 60 Å medium pore diameter; 60 Å pore size
• pH: ~6.8 (10% in aq. suspension)
• bp: 2230 °C
• mp: >1600 °C
• anion nyomok: chloride (Cl^-): ≤0.003%
• SMILES string: O=[Si]=O
• InChI: 1S/O2Si/c1-3-2
• Nemzetközi kémiai azonosító kulcs: VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Leírás

Általános leírás

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

Alkalmazás

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

Biztonsági adatok

• Tárolási osztály kódja: 11 - Combustible Solids
• WGK: nwg
• Lobbanási pont (F): Not applicable
• Lobbanási pont (C): Not applicable