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Merck
CN

60735

Supelco

Silica gel

high-purity grade, 40, 70-230 mesh, suitable for column chromatography

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About This Item

CAS Number:
7631-86-9
EC Number:
231-545-4
MDL number:
MFCD00011232
UNSPSC Code:
12352309
PubChem Substance ID:
329759178
NACRES:
SB.52

Key Documents

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grade

high-purity grade

Quality Level

100

form

powder or crystals

technique(s)

LPLC: suitable

surface area

500 m2/g , approx.

matrix

Silica

matrix active group

silica

particle size

0.063-0.200 mm (70-230 mesh ASTM)
70-230 mesh

pore size

40 Å mean pore size

bp

2230 °C

mp

>1600 °C

suitability

suitable for column chromatography

separation technique

hydrophilic interaction (HILIC)

storage temp.

2-8°C

SMILES string

O=[Si]=O

InChI

1S/O2Si/c1-3-2

InChI key

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

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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

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

Regulatory Information

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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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