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Silica gel

Name: Silica gel
Brand: SIAL

high-purity grade, pore size 60 Å, 220-440 mesh particle size, 35-75 μm particle size, for flash chromatography

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CAS Number:

112926-00-8

EC Number:

231-545-4

MDL number:

MFCD00011232

PubChem Substance ID:

329759183

NACRES:

SB.52

grade

high-purity grade

Quality Level

100

description

activity acc. to Brockmann and Schodder 2 - 3

form

powder or crystals

manufacturer/tradename

Sigma-Aldrich

technique(s)

LPLC: suitable

surface area

500 m²/g

matrix

Silica

matrix active group

silica

particle size

220-440 mesh
35-75 μm

pore size

0.8 cm³/g pore volume
60 Å

bp

2230 °C

mp

>1600 °C

separation technique

hydrophilic interaction (HILIC)

SMILES string

O=[Si]=O

InChI

1S/O2Si/c1-3-2

InChI key

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

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LPLC Media & Accessories

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

Application

Silica gel may be used in separation of single-walled carbon nanotube (SWNT) by simple filtration.

Z271993

Wilmad^® NMR tubes 5 mm diam., precision, frequency 300 MHz, L 7 in.

Storage Class Code

11 - Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Separation of single-walled carbon nanotubes on silica gel. Materials morphology and Raman excitation wavelength affect data interpretation.

Christopher A Dyke et al.

Journal of the American Chemical Society, 127(12), 4497-4509 (2005-03-24)

In this report, procedures are discussed for the enrichment of single-walled carbon nanotube (SWNT) types by simple filtration of the functionalized SWNTs through silica gel. This separation uses nanotube sidewall functionalization employing two different strategies. In the first approach, a

A simple method for production of pure silica from rice hull ash

Kalapathy, U., A. Proctor, and J. Shultz.

Bioresource Technology, 73, 257-262 (2000)

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)

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