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400866

Sigma-Aldrich

Iron(II) oxide

−10 mesh, ≥99.6% trace metals basis

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Synonym(s):
Ferrous oxide, Iron monooxide
Empirical Formula (Hill Notation):
FeO
CAS Number:
Molecular Weight:
71.84
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

Quality Level

Assay

≥99.6% trace metals basis

form

powder

impurities

≤5% free iron

particle size

−10 mesh

density

5.7 g/mL at 25 °C (lit.)

application(s)

battery manufacturing

SMILES string

O=[Fe]

InChI

1S/Fe.O

Inchi Key

UQSXHKLRYXJYBZ-UHFFFAOYSA-N

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This Item
310069637106544884
Iron(II) oxide −10 mesh, ≥99.6% trace metals basis

Sigma-Aldrich

400866

Iron(II) oxide

Iron(II,III) oxide powder, <5 μm, 95%

Sigma-Aldrich

310069

Iron(II,III) oxide

Iron(II,III) oxide nanopowder, 50-100 nm particle size (SEM), 97% trace metals basis

Sigma-Aldrich

637106

Iron(II,III) oxide

Iron(III) oxide nanopowder, <50 nm particle size (BET)

Sigma-Aldrich

544884

Iron(III) oxide

form

powder

form

powder

form

nanopowder, spherical

form

nanopowder

particle size

−10 mesh

particle size

<5 μm

particle size

50-100 nm (SEM)

particle size

<50 nm (BET)

density

5.7 g/mL at 25 °C (lit.)

density

4.8-5.1 g/mL at 25 °C (lit.)

density

4.8-5.1 g/mL at 25 °C (lit.)

density

-

impurities

≤5% free iron

impurities

-

impurities

-

impurities

-

application(s)

battery manufacturing

application(s)

battery manufacturing

application(s)

battery manufacturing

application(s)

battery manufacturing

General description

Iron(II) oxide nanoparticles possess unique properties such as superparamagnetic behavior, ease of surface modification, and biocompatibility. They are applied in the fields of photocatalysis, magnetic storage media, targeted drug delivery, and gas sensing.
Iron(II) oxide, also known as ferrous oxide or wustite, is a chemical compound with the formula FeO. It is a fine, grey-black powder with a 10-mesh particle size. Iron(II) oxide adopts a cubic, rock salt structure and often exists as a non-stoichiometric, iron-deficient compound in which some of the iron is oxidized to a 3+ oxidation state. Iron(II) oxide is shelf-stable at room temperature but at 575 °C tends to disproportionate to iron metal and Fe3O4. One of its primary applications is as a black pigment in paints, inks, and ceramics.

Storage Class Code

13 - Non Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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