EMAIL THIS PAGE TO A FRIEND
391484 Sigma-Aldrich

Silica gel

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

Purchase

Properties

Related Categories Analytical/Chromatography, EMD Millipore Grades, EMD Millipore Irregular Silica Gel, Essential Chemicals, Research Essentials,
grade   high-purity grade (7734)
mfr. no.   EMD Millipore
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 as an adsorbent to separate compounds by chromatography.1 It was used to compare MCM-41 type mesoporous adsorbents.1
It may be used in the synthesis of the following:
• Silica gel-immobilized-dithioacetal derivatives.2
• Piperazino silica reagent for removing 9-fluorenylmethyloxycarbonyl amino protecting group.3
• Polysiloxanes silica hybrids.4

General description

Silica gel is a rigid 3D network of colloidal silica.5 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.6 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 extraction5

Price and Availability

Safety & Documentation

Safety Information

WGK Germany 
nwg

Documents

Certificate of Analysis

Certificate of Origin

Protocols & Articles
Peer-Reviewed Papers

References

Set your institution to view full text papers.

1. Nonlinear absorption properties of some 1, 4, 8, 11, 15, 18, 22, 25-octaalkylphthalocyanines and their metallated derivatives. Auger A, et al. J. Mater. Chem. 13(5), 1042-1047, (2003)

2. Silica gel-immobilized-dithioacetal derivatives as potential solid phase extractors for mercury (II). Mahmoud ME and Gohar GA. Talanta 51(1), 77-87, (2000)

3. Piperazino-functionalized silica gel as a deblocking-scavenging agent for the 9-fluorenylmethyloxycarbonyl amino-protecting group. Carpino LA, et al. J. Org. Chem. 48(5), 666-669, (1983)

4. Branched functionalised polysiloxane-silica hybrids for immobilisation of catalysts. Rózga-Wijas, K, et al. J. Mater. Chem. 13(9), 2301-2310, (2003)

5. 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)

6. 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)

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

Loading...


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

Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?