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236845 Sigma-Aldrich

Silica gel

high-purity grade (Davisil Grade 646), 35-60 mesh, pore size 150 Å

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Properties

Related Categories Analytical/Chromatography, Davisil Grades, Davisil Irregular Silica Gel, Essential Chemicals, Research Essentials,
grade   high-purity grade (Davisil Grade 646)
InChI Key   VYPSYNLAJGMNEJ-UHFFFAOYSA-N
assay   ≥99%
form   powder
mfr. no.   Davisil®
particle size   250-500 μm
  35-60 mesh
pore size   1.15 cm3/g pore volume
  150 Å
surface area   300 m2/g
pH   7.0 (5% in slurry)
bp   2230 °C
mp   >1600 °C

Description

Packaging

1 kg in poly bottle

100 g in poly bottle

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 leading to form 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.

Legal Information

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

Price and Availability

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
nwg
RTECS 
VV7315000
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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