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214477 Sigma-Aldrich

Silica gel

high-purity grade (Davisil Grade 923), pore size 30 Å, 100-200 mesh

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Properties

Related Categories Analytical/Chromatography, Davisil Irregular Silica Gel, Essential Chemicals, Other Silica Gels, Research Essentials,
grade   high-purity grade (Davisil Grade 923)
InChI Key   VYPSYNLAJGMNEJ-UHFFFAOYSA-N
form   fine crystals
mfr. no.   Davisil®
particle size   100-200 mesh
  75-150 μm
pore size   0.40 cm3/g pore volume
  30 Å
surface area   430-530 m2/g
bp   2230 °C
mp   >1600 °C

Description

Packaging

1 kg in poly bottle

50, 250 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 lresulting 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

Footnote

Recommended Applications
Grade 923 meets ASTM D1319 specifications for hydrocarbon analysis

Legal Information

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

Price and Availability


LC-MS Grade Solvents and Reagents

Laboratory Gloves
Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
nwg
Protocols & Articles

Articles

Selection Guide for Polymeric Resins in Chromatography & Purification

Sigma-Aldrich carries a vast array of resins, from leading manufacturers; such as, Dow Chemical, Rohm & Haas, Mitsubishi, and Lanxess. Our product line includes adsorbent, ion-exchange (anion / catio...
Keywords: Adsorption, Antibiotics, Detergents, Fermentation, Filtration, Hormones, Ion Exchange, Pharmaceutical, Purification, Separation

Peer-Reviewed Papers
15

References

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