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60770

Supelco

Silica gel

high-purity grade, suitable for thin layer chromatography (TLC), H, without calcium sulfate

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About This Item

CAS Number:
112926-00-8
EC Number:
231-545-4
MDL number:
MFCD00011232
UNSPSC Code:
41115711
PubChem Substance ID:
329759217
NACRES:
NC.07

grade

high-purity grade

Quality Level

100

form

powder

quality

without calcium sulfate

manufacturer/tradename

Sigma-Aldrich

technique(s)

thin layer chromatography (TLC): suitable

surface area

470-530 m2/g

particle size

40 μm
>400 mesh

pore size

0.7-0.85 cm3/g pore volume
60 Å pore size

bp

2230 °C

mp

>1600 °C

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.[1] It is exclusively used as a support material for the active titanium(III) centers in Ziegler-Natta catalysts. Silica gel allows a controlled fragmentation resulting in the formation of uniform polymer particles with narrow particle size distribution and high bulk density.[2] 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 is removed by supercritical extraction.[1]

Storage Class

11 - Combustible Solids

wgk_germany

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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T Martin et al.
Chemical communications (Cambridge, England), (1)(1), 24-25 (2002-07-18)
Texture-related features of water intrusion in hydrophobised MCM-41 silicas render these materials especially suitable for energy dissipation in mechanical dampers.
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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