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391484 Sigma-Aldrich

Silica gel

high-purity grade (Merck Grade 7734), pore size 60 Å, 70-230 mesh

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Properties

Related Categories Analytical/Chromatography, E. Merck Irregular Silica Gel, Essential Chemicals, Merck Grades, Research Essentials,
grade   high-purity grade (Merck Grade 7734)
mfr. no.   Merck
particle size   63-200 μm
  70-230 mesh
pore size   ~0.8 cm3/g pore volume
  60 Å
surface area   550 m2/g
bp   2230 °C
mp   >1600 °C

Description

Packaging

1 kg in poly bottle

100 g in poly bottle

5 kg in fiber drum

Application

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 resulting 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

Merck is a trademark of Merck KGaA

Price and Availability

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Silica gel

high-purity grade, pore size 60 Å, 70-230 mesh

Silica gel

high-purity grade, pore size 60 Å, 70-230 mesh, 63-200 μm, for column chromatography

Safety & Documentation

Safety Information

WGK Germany 
nwg

Documents

Certificate of Analysis

Certificate of Origin

Protocols & Articles

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

References

Set your institution to view full text papers.

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)

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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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