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Merck
CN

288519

Silica gel

high-purity grade, pore size 60 Å, 5-25 μm particle size, without binder, suitable for thin layer chromatography (TLC)

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About This Item

CAS Number:
7631-86-9
NACRES:
NB.21
PubChem Substance ID:
24857347
UNSPSC Code:
41115711
EC Number:
231-545-4
MDL number:
MFCD00011232

Key Documents

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InChI key

VYPSYNLAJGMNEJ-UHFFFAOYSA-N

InChI

1S/O2Si/c1-3-2

SMILES string

O=[Si]=O

material

plastic support, silica gel 60 matrix

grade

high-purity grade

form

powder

feature

binder Organic Polymer, fluorescent indicator: no

packaging

pkg of 250 g

manufacturer/tradename

Sigma-Aldrich

technique(s)

thin layer chromatography (TLC): suitable

surface area

~500 m2/g

impurities

≤0.001% Fe3+

particle size

5-25 μm

pore size

0.75 cm3/g pore volume, 60 Å medium pore diameter, 60 Å pore size

pH

~6.8 (10% in aq. suspension)

bp

2230 °C

mp

>1600 °C

anion traces

chloride (Cl-): ≤0.003%

Quality Level

100

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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. It allows a controlled fragmentation resulting 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

Application

Silica gel was used on glass plates to perform preparative thin layer chromatography.

Storage Class

11 - Combustible Solids

wgk

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
BCCL7495
BCCG8621
BCCB5313
BCBT8159
BCBT4356

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F. Daayf et al.
Plant physiology, 113(3), 719-727 (1997-03-01)
Phenolic compounds extracted from cucumber (Cucumis sativus L.) leaves were separated and analyzed for their differential presence and fungitoxicity in relation to a prophylactic treatment with Milsana (Compo, Munster, Germany) against powdery mildew (Sphaerotheca fuliginea). Based on our extraction and
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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