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400866

Iron(II) oxide

−10 mesh, ≥99.6% trace metals basis

Synonym(s):

Ferrous oxide, Iron monooxide

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About This Item

Empirical Formula (Hill Notation):
FeO
CAS Number:
1345-25-1
Molecular Weight:
71.84
NACRES:
NA.23
PubChem Substance ID:
24864959
UNSPSC Code:
12352303
EC Number:
215-721-8
MDL number:
MFCD00016095

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InChI key

UQSXHKLRYXJYBZ-UHFFFAOYSA-N

InChI

1S/Fe.O

SMILES string

O=[Fe]

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

Quality Level

100

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This Item
637106544884518158
Iron(II) oxide −10 mesh, ≥99.6% trace metals basis

Sigma-Aldrich

400866

Iron(II) 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

Sigma-Aldrich

544884

Iron(III) oxide

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

Sigma-Aldrich

518158

Iron(II,III) oxide

form

powder

form

nanopowder, spherical

form

nanopowder

form

powder

assay

≥99.6% trace metals basis

assay

97% trace metals basis

assay

-

assay

99.99% trace metals basis

particle size

−10 mesh

particle size

50-100 nm (SEM)

particle size

<50 nm (BET)

particle size

-

density

5.7 g/mL at 25 °C (lit.)

density

4.8-5.1 g/mL at 25 °C (lit.)

density

-

density

4.8-5.1 g/mL at 25 °C (lit.)

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.[1]
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

13 - Non Combustible Solids

wgk

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
SDBB4866
SDBB1497
STBL4737
STBL3360
STBL0139

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Biosynthesized FeO nanoparticles coated carbon anode for improving the performance of microbial fuel cell
M. Harshiny, et al.
International Journal of Hydrogen Energy, 42, 26488-26495 (2017)
L F Gamarra et al.
Journal of nanoscience and nanotechnology, 10(7), 4145-4153 (2010-12-07)
The magnetic resonance imaging contrast agent, the so-called Endorem colloidal suspension on the basis of superparamagnetic iron oxide nanoparticles (mean diameter of 5.5 nm) coated with dextran, were characterized on the basis of several measurement techniques to determine the parameters
Hiroaki Kotani et al.
Journal of the American Chemical Society, 133(10), 3249-3251 (2011-02-19)
The photocatalytic formation of a non-heme oxoiron(IV) complex, [(N4Py)Fe(IV)(O)](2+) [N4Py = N,N-bis(2-pyridylmethyl)-N-bis(2-pyridyl)methylamine], efficiently proceeds via electron transfer from the excited state of a ruthenium complex, [Ru(II)(bpy)(3)](2+)* (bpy = 2,2'-bipyridine) to [Co(III)(NH(3))(5)Cl](2+) and stepwise electron-transfer oxidation of [(N4Py)Fe(II)](2+) with 2 equiv
Haiyan Hong et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 17(31), 8726-8730 (2011-06-17)
Iron oxide coated platinum nanowires (Pt@Fe(2)O(3)NWs) with a diameter of 2.8 nm have been prepared by the oxygen oxidation of FePt NWs in oleylamine. These "cable"-like NWs were characterised by transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and X-ray
Antony George et al.
ACS applied materials & interfaces, 3(9), 3666-3672 (2011-08-16)
A cost-effective and versatile methodology for bottom-up patterned growth of inorganic and metallic materials on the micro- and nanoscale is presented. Pulsed electrodeposition was employed to deposit arbitrary patterns of Ni, ZnO, and FeO(OH) of high quality, with lateral feature
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Questions

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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

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    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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