214477

Silica gel

high-purity grade (Davisil Grade 923), pore size 30 Å, 100-200 mesh

• CAS Number: 112926-00-8
• EC Number: 231-545-4
• MDL number: MFCD00011232
• UNSPSC Code: 12352309
• PubChem Substance ID: 24852837
• NACRES: SB.52

Properties

• grade: high-purity grade (Davisil Grade 923)
• Quality Level: 200
• form: fine crystals
• manufacturer/tradename: Davisil^®
• technique(s): LPLC: suitable
• surface area: 430-530 m²/g
• matrix: Silica
• matrix active group: silica
• particle size: 100-200 mesh; 75-150 μm
• pore size: 0.40 cm³/g pore volume; 30 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

Description

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 lresulting 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 to compare MCM-41 type mesoporous adsorbents.

Footnote

Recommended Applications
Grade 923 meets ASTM D1319 specifications for hydrocarbon analysis

Legal Information

Davisil is a registered trademark of W.R. Grace & Co.-Conn.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: nwg
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable