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544884

Sigma-Aldrich

Iron(III) oxide

nanopowder, <50 nm particle size (BET)

Synonym(s):

Ferric oxide

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About This Item

Empirical Formula (Hill Notation):
Fe2O3
CAS Number:
1309-37-1
Molecular Weight:
159.69
EC Number:
215-168-2
MDL number:
MFCD00011008
UNSPSC Code:
12352302
PubChem Substance ID:
24878791
NACRES:
NA.23

description

crystalline (primarily γ)

Quality Level

100

form

nanopowder

surface area

50-245 m2/g

particle size

<50 nm (BET)

application(s)

battery manufacturing

SMILES string

O=[Fe]O[Fe]=O

InChI

1S/2Fe.3O

InChI key

JEIPFZHSYJVQDO-UHFFFAOYSA-N

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General description

Iron(III) oxide nanopowder is a fine powder with a particle size of less than 50 nm. It is a red or black solid compound made up of iron and oxygen. It is also known as hematite or ferric oxide. It is a naturally occurring mineral that can also be synthesized in the laboratory. Iron(III) oxide has a number of useful physical properties. It has a high refractive index and is opaque, making it useful as a pigment in paints in inks. Iron(III) oxide is also catalytically active and weakly ferromagnetic at room temperature.

Application

Chemical Synthesis of Monodisperse Magnetic Nanoparticles
Iron(III) oxide nanopowder has a number of uses due to its magnetic and catalytic properties. It is used in the production of magnetic recording media such as magnetic tapes and disks. It is also used as a catalyst in the production of chemicals, including the production of gasoline and plastics and in environmental remediation.

Features and Benefits

  • High theoretical specific capacity
  • Biocompatibility
  • Ease of coating and modification
  • Non-toxicity

Storage Class Code

13 - Non 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 Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

544884-VAR:
544884-5G:4548173943985
544884-BULK:
544884-25G:4548173943978

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Certificates of Analysis (COA)

Lot/Batch Number
MKCM1032
MKCN6538
MKCH7591
MKCD8054
MKBW7446V

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Yangyang Yang et al.
Ecotoxicology and environmental safety, 148, 89-96 (2017-10-17)
The behaviors of nanoparticles rely on the aqueous condition such as natural organic matter (NOM). Therefore the presence of NOM would influence the interaction of nanoparticles with other substances possibly. Here, microcystin-LR (MC-LR) adsorption on iron oxide nanoparticles (IONPs) was
Hokuto Fuse et al.
Nanomaterials (Basel, Switzerland), 9(2) (2019-02-06)
Submicrometre spherical particles made of Au and Fe can be fabricated by pulsed-laser melting in liquid (PLML) using a mixture of Au and iron oxide nanoparticles as the raw particles dispersed in ethanol, although the detailed formation mechanism has not
Daniel Matatagui et al.
Sensors (Basel, Switzerland), 19(24) (2019-12-11)
A portable electronic nose based on surface acoustic wave (SAW) sensors is proposed in this work to detect toxic chemicals, which have a great potential to threaten the surrounding natural environment or adversely affect the health of people. We want
Junho Han et al.
Scientific reports, 9(1), 6130-6130 (2019-04-18)
Recent developments in analytics using infrared spectroscopy have enabled us to identify the adsorption mechanism at interfaces, but such methods are applicable only for simple systems. In this study, the preferential adsorption of phosphate on binary goethite and maghaemite was
Andrew Pratt et al.
Nature materials, 13(1), 26-30 (2013-11-05)
Geometry and confinement effects at the nanoscale can result in substantial modifications to a material's properties with significant consequences in terms of chemical reactivity, biocompatibility and toxicity. Although benefiting applications across a diverse array of environmental and technological settings, the
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