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Silica gel Inorganic Sorbent

Name: Silica gel Inorganic Sorbent
Brand: SIAL

high-purity grade, 70-230 mesh

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About This Item

CAS Number:

112926-00-8

UNSPSC Code:

12352309

PubChem Substance ID:

329759187

NACRES:

SB.52

EC Number:

231-545-4

MDL number:

MFCD00011232

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Properties

Product Name

Silica gel, high-purity grade, average pore size 60 Å (52-73 Å), 70-230 mesh, 63-200 μm, for column chromatography

grade

high-purity grade

Quality Level

200

description

activity acc. to Brockmann and Schodder 2 - 3

form

powder or crystals

manufacturer/tradename

Sigma-Aldrich

technique(s)

LPLC: suitable

surface area

470-530 m²/g

matrix

Silica

matrix active group

silica

particle size

63-200 μm, 70-230 mesh

pore size

0.7-0.85 cm³/g pore volume, 60 Å average pore size (52-73 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

Description

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.[1]

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1 of 1

This Item	60737	60738	288519
Supelco 60741 Silica gel	Supelco 60737 Silica gel	Supelco 60738 Silica gel	Supelco 288519 Silica gel
matrix active group silica	matrix active group silica	matrix active group silica	matrix active group -
particle size 63-200 μm, 70-230 mesh	particle size 230-400 mesh, 40-63 μm	particle size 220-440 mesh, 35-75 μm	particle size 5-25 μm
separation technique hydrophilic interaction (HILIC)	separation technique hydrophilic interaction (HILIC)	separation technique hydrophilic interaction (HILIC)	separation technique -
matrix Silica	matrix Silica	matrix Silica	matrix -
pore size 0.7-0.85 cm³/g pore volume, 60 Å average pore size (52-73 Å)	pore size 0.8 cm³/g pore volume, 60 Å	pore size 0.8 cm³/g pore volume, 60 Å	pore size 0.75 cm³/g pore volume, 60 Å medium pore diameter, 60 Å pore size
technique(s) LPLC: suitable	technique(s) LPLC: suitable	technique(s) LPLC: suitable	technique(s) thin layer chromatography (TLC): suitable

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Storage Class

11 - Combustible Solids

wgk

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

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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)

Global Trade Item Number

SKU	GTIN
15073-5G	04061832463087
60741-1KG	04061838550453
60741-5KG	04061838550460
60741-25KG	04061832912547

Questions

1–2 of 2 Questions

Anonymous

10 months ago

How can I determine the shelf life / expiration / retest date of this product?

1 answer
1. Technical Support
  
  10 months ago
  
  If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
  For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
  For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
  For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
  
  Helpful?
Anonymous

a year ago

How is shipping temperature determined? And how is it related to the product storage temperature?

1 answer
1. Technical Support
  
  a year ago
  
  Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
  
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