Analytical/Chromatography,
Essential Chemicals,
Irregular Silica Gel, High-Purity Grade,
Other Silica Gels,
Research Essentials,
Resins & LC Separation Media,
Resins and Media,
Silica Gel for Column Chromatography,
Silica Gels,
Spherical & Irregular Bare Silica Gel, Sigma-Aldrich Brand
More...
grade
high-purity grade
description
for column chromatography
InChI Key
VYPSYNLAJGMNEJ-UHFFFAOYSA-N
form
powder
mfr. no.
Sigma-Aldrich
particle size
200-400 mesh
40-75 μm
pore size
0.75 cm3/g pore volume
60 ?
surface area
500 m2/g
bp
2230 °C
mp
>1600 °C
Description:
Packaging
1 kg in poly bottle
10kg packaged in open-head fiber drums; 50g, 250g, 500?g, 1kg packaged in poly bottles
10 kg in fiber drum
500 g in poly bottle
Application
Silica gel was used to compare MCM-41 type mesoporous adsorbents.
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