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544884 Aldrich

Iron(III) oxide

nanopowder, <50 nm particle size (BET)

Synonym: Ferric oxide

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Properties

Related Categories 26: Fe, Biomedical Materials, Iron, Iron Oxide Nanoparticles, Magnetic Materials,
description   crystalline (primarily γ)
InChI Key   JEIPFZHSYJVQDO-UHFFFAOYSA-N
form   nanopowder
particle size   <50 nm (BET)
surface area   50-245 m2/g
Featured Industry   Battery Manufacturing

Description

Frequently Asked Questions

Frequently Asked Questions are available for this Product.

Packaging

5, 25 g in glass bottle

Protocols & Applications

Chemical Synthesis of Monodisperse Magnetic Nanoparticles

Price and Availability


The Future of Bioimaging
Safety & Documentation

Safety Information

Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
nwg
RTECS 
NO7400000

Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis. These documents are located on the product detail page under Useful Links & Tools. Click on the following link to search for a Certificate of Analysis. Please click the following link to see the details on our Product Dating Information.
How do I get lot-specific information or a Certificate of Analysis?
A Certificate of Analysis is available by lot number and can be obtained through our Advanced Search Option: http://www.sigmaaldrich.com/catalog/AdvancedSearchPage.do
How do I find price and availability?
There are several ways to find pricing and availability for our products.  Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers. 
What form of iron (III) oxide is Product 544884?
Both the alpha-form and gamma-form are present in the mineral form naturally. This nanopowder is expected to be comprised of primarily the gamma-form, also known as maghemite.
What is the purity of Iron(III) oxide, Product 544884?
The purity of this product is not specifically stated on the certificate of analysis. However, an estimated purity can be determined based on the iron content. One mole of iron (III) oxide contains 2 moles (or 111.694g) of iron. The theoretical amount of iron present is approximately 69.94%. Purity can only be measured for a particular lot, which can be calculated based on the iron content determined for that lot. The ratio of the experimental content and the theoretical content, expressed as a percentage will be the purity of the particular lot. For example, an experimental result of 68.6% iron corresponds to a purity of 98.1%.
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS. To access the shipping information for this material, use the link on the product detail page for the product, or search here. 
My question is not addressed here, how can I contact Technical Service for assistance?
Use the option to the right to "Ask a Question" by email of a Technical Service Scientist.
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Protocols & Articles

Articles

Chemical Synthesis of Monodisperse Magnetic Nanoparticles

Magnetic nanoparticles have attracted tremendous attention due to their novel properties and their potential applications in magnetic recording, magnetic energy storage and biomedicine.1-3 Thanks to ...
Sheng Peng, Shouheng Sun
Material Matters 2009, 4.1, 14.
Keywords: Applications, Chemical vapor deposition, Deposition, Diffusion, Magnetic resonance imaging, Magnetic resonance spectroscopy, Mass spectrometry, Methods, Microscopy, Nucleic acid annealing, Oxidations, Precipitation, Reductions, Scanning electron microscopy, Transmission electron microscopy

Functional Magnetic Materials: Synergy Between Basic Science and Evolving Technology

S. B. Roy Materials and Advanced Accelerator Sciences Division Raja Ramanna Centre for Advanced Technology Indore-452013, India Email: sbroy@rrcat.gov.in
Keywords: Crystallization, Microscopy, Phase transitions, Reductions, transformation

Graphene-Based Composites and their Unique Renewable Energy Applications

Wen Qian, Andrew Y. Wang* Ocean NanoTech, LLC, San Diego, CA 92126, USA *Email: awang@oceannanotech.com
Keywords: Catalysis, Nanotubes, Oxidations, Purification, Recombination, Reductions, Renewable energy, Semiconductor, Separation

Nanofluids for Biomedical Applications Using Spherical Iron Oxide Magnetic Nanoparticles Fabricated by High-Power Physical Evaporation

A. P. Safronov,1,2 I. V. Beketov,1,2 O. M. Samatov,1 G. V. Kurlyandskaya,2,3,* S. M. Bhagat,4 A. Larrañaga,5 I. Orue,5 R. Andrade5 1Institute of Electrophysics, RAS, Amundsen St. 106, 620016, Ekateri...
Keywords: Absorption, Condensations, Diffraction, Electronics, Evaporation, High performance liquid chromatography, Mass spectrometry, Melting, Microscopy, Oxidations, Potentiometric titrations, Scanning electron microscopy, Separation, Titrations, Transmission electron microscopy, X-Ray diffraction

Soft Magnetic Nanocrystalline Alloys: Materials and Models

Victorino Franco Departamento de Física de la Materia Condensada, ICMSE-CSIC Universidad de Sevilla, P.O. Box 1065, 41080, Sevilla, Spain Email: vfranco@us.es
Victorino Franco
Material Matters, 2016, 11.4
Keywords: Addition reactions, Crystallization, High performance liquid chromatography, Mass spectrometry, Nucleic acid annealing, Precipitation, Spectroscopy, transformation

Surface-enhanced Solar Energy Conversion Systems Using Gold and Silver Nanoparticles

Sustainable, environment-friendly, and clean energy sources with sufficiently high production efficiency for practical application are highly desirable to meet the energy challenge of the 21st centur...
Shanlin Pan and Arunava Gupta
Material Matters, 2012 v7, n4
Keywords: Absorption, Applications, Catalysis, Chemical vapor deposition, Degradations, Deposition, Diffusion, Electronics, Help, Organic electronics, Photovoltaics, Recombination, Renewable energy, Search, Semiconductor, Separation, Solar cells, Spectra, Support, Type

Titania Nanotubes: Synthesis and Applications

Eugen Panaitescu1 and Latika Menon2 Department of Physics Northeastern University, Boston, MA 02115 USA Email: 1e.panaitescu@neu.edu, 2l.menon@neu.edu
Keywords: Adsorption, Agriculture, Antimicrobials, Apoptosis, Automotive, Calorimetry, Cosmetics, Degradations, Deposition, Diffusion, Electrochemical analysis, Environmental, Filtration, Melting, Nanotubes, Oxidations, Photovoltaics, Precipitation, Recombination, Redox Reactions, Reductions, Semiconductor, Separation, Sol-gel, Solar cells, Solvents

Peer-Reviewed Papers
15

References

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