60765

Silica gel

high-purity grade, with ~15% calcium sulfate and fluorescent indicator, GF₂₅₄, suitable for thin layer chromatography (TLC)

• CAS Number: 112926-00-8
• EC Number: 231-545-4
• MDL number: MFCD00011232
• PubChem Substance ID: 329759214
• NACRES: NC.07

Properties

• grade: high-purity grade
• Quality Level: 100
• form: powder
• quality: with ~15% calcium sulfate and fluorescent indicator
• manufacturer/tradename: Sigma-Aldrich
• technique(s): thin layer chromatography (TLC): suitable
• particle size: <20 μm; >632 mesh
• pore size: 0.8 cm³/g pore volume; 60 Å pore size
• surface area: 500 m²/g
• bp: 2230 °C
• mp: >1600 °C
• 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 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 is removed by supercritical extraction

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: nwg
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves