Skip to Content
MilliporeSigma
All Photos(2)

Documents

310069

Sigma-Aldrich

Iron(II,III) oxide

powder, <5 μm, 95%

Synonym(s):

Ferrosoferric oxide, Iron oxide black, Magnetite

Sign Into View Organizational & Contract Pricing
All Photos(2)

About This Item

Empirical Formula (Hill Notation):
Fe3O4
CAS Number:
1317-61-9
Molecular Weight:
231.53
EC Number:
215-277-5
MDL number:
MFCD00011010
UNSPSC Code:
12352303
PubChem Substance ID:
24858770
NACRES:
NA.23

assay

95%

form

powder

particle size

<5 μm

mp

1538 °C (lit.)

density

4.8-5.1 g/mL at 25 °C (lit.)

application(s)

battery manufacturing

SMILES string

O=[Fe].O=[Fe]O[Fe]=O

InChI

1S/3Fe.4O

InChI key

SZVJSHCCFOBDDC-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Related Categories

General description

Iron(II,III) oxide is an earth-abundant magneticoxide that has a high specific surface area, and good dispersion. The presenceof Fe3+ and Fe2+ with equal numbers in the Fe3O4structure provides higher light absorption and as a result superiorelectrocatalytic activities and high performance in solar cells compared toother iron oxides.

Application

Iron(II,III) oxide can be used as:
  • A starting material to synthesize Ca2Fe2O5 (srebrodolskite) microspheres via a single-stage flame spheroidisation (FS) process.
  • A catalyst for reverse water gas shift reactions(RWGS).

Storage Class

11 - Combustible Solids

wgk_germany

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Miloch Marjanovic et al.
Water research, 140, 220-231 (2018-05-02)
In this work, solar disinfection (SODIS) was enhanced by moderate addition of Fe and sodium peroxydisulfate (PDS), under solar light. A systematic assessment of the activating factors was performed, firstly isolated, then in pairs and concluded in the combined Fe/heat/solar
Egor A Turovsky et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 40(49), 9364-9371 (2020-10-31)
Mechanosensitivity is a well-known feature of astrocytes, however, its underlying mechanisms and functional significance remain unclear. There is evidence that astrocytes are acutely sensitive to decreases in cerebral perfusion pressure and may function as intracranial baroreceptors, tuned to monitor brain
Yongxing Hu et al.
Journal of the American Chemical Society, 135(6), 2213-2221 (2013-01-26)
Controlled assembly of nanoparticles into asymmetric configurations is of great interest due to their novel properties and promising applications. In this Article, we report a generic strategy for the synthesis of dimer nanoclusters and asymmetric nanoassemblies by using magnetic colloidal
Jens Baumgartner et al.
Nature materials, 12(4), 310-314 (2013-02-05)
The formation of crystalline materials from solution is usually described by the nucleation and growth theory, where atoms or molecules are assumed to assemble directly from solution. For numerous systems, the formation of the thermodynamically stable crystalline phase is additionally
Marina I Siponen et al.
Nature, 502(7473), 681-684 (2013-10-08)
Magnetotactic bacteria align along the Earth's magnetic field using an organelle called the magnetosome, a biomineralized magnetite (Fe(II)Fe(III)2O4) or greigite (Fe(II)Fe(III)2S4) crystal embedded in a lipid vesicle. Although the need for both iron(II) and iron(III) is clear, little is known
View All Related Papers

Articles

Magnetic Nanoparticles Synthesis

Prof. Randal Lee discusses iron oxide magnetic nanospheres and nanocubes design considerations for biosensing applications.

Self-Propagating Reactions Induced by Mechanical Alloying

An article concerning self-propagating reactions induced by mechanical alloying, presented by Sigma-Aldrich.com.

Soft Magnetic Nanocrystalline Alloys: Materials

Magnetic materials find diverse applications from data storage to renewable energy.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service