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310069

Sigma-Aldrich

Iron(II,III) oxide

powder, <5 μm, 95%

Synonym(s):
Ferrosoferric oxide, Iron oxide black, Magnetite
Empirical Formula (Hill Notation):
Fe3O4
CAS Number:
Molecular Weight:
231.53
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

Quality Level

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

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Iron(II,III) oxide powder, &lt;5&#160;&#956;m, 95%

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Iron(II,III) oxide

Iron(II,III) oxide 99.99% trace metals basis

Sigma-Aldrich

518158

Iron(II,III) oxide

assay

95%

assay

97% trace metals basis

assay

99.99% trace metals basis

assay

-

form

powder

form

nanopowder, spherical

form

powder

form

nanoparticles, solution

particle size

<5 μm

particle size

50-100 nm (SEM)

particle size

-

particle size

9-11 nm (TEM; conforms)

mp

1538 °C (lit.)

mp

1538 °C (lit.)

mp

1538 °C (lit.)

mp

-

density

4.8-5.1 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

0.865 g/mL at 25 °C

application(s)

battery manufacturing

application(s)

battery manufacturing

application(s)

battery manufacturing

application(s)

-

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 Code

11 - Combustible Solids

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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