214396 Sigma-Aldrich

Silica gel

high-purity grade (Davisil Grade 12), pore size 22 Å, 28-200 mesh



Related Categories Analytical/Chromatography, Davisil Irregular Silica Gel, Essential Chemicals, Other Silica Gels, Research Essentials,
grade   high-purity grade (Davisil Grade 12)
mfr. no.   Davisil®
particle size   28-200 mesh
  75-650 μm
pore size   0.43 cm3/g pore volume
  22 Å
surface area   800 m2/g
bp   2230 °C
mp   >1600 °C



1 kg in poly bottle

250 g in poly bottle

5 kg in poly drum


Silica gel was used to compare MCM-41 type mesoporous adsorbents.1

General description

Silica gel is a rigid 3D network of colloidal silica.2 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.3 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 extraction2

Legal Information

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

Price and Availability

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Safety & Documentation

Safety Information

WGK Germany 

Protocols & Articles


Silica Gel Adsorbents

Silica gels are used as an adsorbent in numerous applications, including chromatographic separations and removal of impurities through adsorption. In chromatography or column chromatography, the stat...
Shyam Verma
Market Segment Manager, Reagents & Chemicals shyam.verma@sial.comAnalytix, Volume 9 Article 3
Keywords: Adsorption, Chromatography, Column chromatography, Flash chromatography, Indicators, Organic synthesis, Purification, Reversed-phase chromatography

Peer-Reviewed Papers


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1. Dissipative water intrusion in hydrophobic MCM-41 type materials. Martin T, Lefevre B, Brunel D, et al. Chem. Commun. (Camb.) (1), 24-5, (2002)


2. A simple method for production of pure silica from rice hull ash Kalapathy, U., A. Proctor, and J. Shultz. Bioresour. Technol. 73, 257-262, (2000)

3. Silica gel supported zirconocene dichloride/methylalumoxane catalysts for ethylene polymerization: Effects of heterogenation on activity, polymer microstructure and product morphology. Janiak, Christoph, and Bernhard Rieger. Angew. Makromol. Chem. 215, 47-57, (1994)

Fieser 9,410 / Fieser 10,346 / Fieser 11,466 / Fieser 12,431

Aldrich MSDS 1, 1601:A / Corp MSDS 1 (2), 3090:A / RegBook 1 (3), 3535:C

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