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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)
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

Suggested Laboratory Gloves


Laboratory GlovesThis substance has been tested against several types of hand protection for CE compliance. Click below to find the recommended gloves for handling this product.



Safety & Documentation

Safety Information

WGK Germany 
nwg
Protocols & Articles
Peer-Reviewed Papers
15

References

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