391484

Silica gel Inorganic Sorbent

high-purity grade (7734), 70-230 mesh

• Číslo CAS: 112926-00-8
• EC Number: 231-545-4
• MDL number: MFCD00011232
• UNSPSC Code: 12352309
• PubChem Substance ID: 24864382
• NACRES: SB.52

Vlastnosti

• product name: Silica gel, high-purity grade (7734), pore size 60 Å, 70-230 mesh
• grade: high-purity grade (7734)
• Quality Level: 100
• form: powder
• manufacturer/tradename: EMD Millipore^®
• technique(s): LPLC: suitable
• surface area: 550 m²/g
• matrix: Silica
• matrix active group: silica
• particle size: 63-200 μm; 70-230 mesh
• pore size: ~0.8 cm³/g pore volume; 60 Å
• bp: 2230 °C
• mp: >1600 °C
• separation technique: hydrophilic interaction (HILIC)
• SMILES string: O=[Si]=O
• InChI: 1S/O2Si/c1-3-2
• InChI key: VYPSYNLAJGMNEJ-UHFFFAOYSA-N

Popis

General description

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 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 as an adsorbent to separate compounds by chromatography. It was used to compare MCM-41 type mesoporous adsorbents.
It may be used in the synthesis of the following:

• Silica gel-immobilized-dithioacetal derivatives.
• Piperazino silica reagent for removing 9-fluorenylmethyloxycarbonyl amino protecting group.
• Polysiloxanes silica hybrids.

Legal Information

EMD Millipore is a registered trademark of Merck KGaA, Darmstadt, Germany

Bezpečnostní informace

• Storage Class: 11 - Combustible Solids
• wgk_germany: nwg
• flash_point_f: Not applicable
• flash_point_c: Not applicable