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Iron(II) Oxide

CAS #:

Linear Formula:


MDL Number:


EC No.:



(2N) 99% Iron Oxide
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(3N) 99.9% Iron Oxide
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(4N) 99.99% Iron Oxide
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(5N) 99.999% Iron Oxide
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Iron(II) Oxide Properties (Theoretical)

Compound Formula FeO
Molecular Weight 71.84
Appearance Powder
Melting Point 1377 °C (2511 °F)
Boiling Point 3414 °C (6177 °F)
Density 5.7 g/cm3
Exact Mass 71.9299
Monoisotopic Mass 71.9299

Iron(II) Oxide Health & Safety Information

Signal Word N/A
Hazard Statements N/A
Hazard Codes N/A
Precautionary Statements N/A
Flash Point Not applicable
RTECS Number N/A
Transport Information NONH
WGK Germany nwg

About Iron(II) Oxide

Oxide IonIron Oxide is a highly insoluble thermally stable Iron source suitable for glass, optic and ceramic applications. Oxide compounds are not conductive to electricity. However, certain perovskite structured oxides are electronically conductive finding application in the cathode of solid oxide fuel cells and oxygen generation systems. They are compounds containing at least one oxygen anion and one metallic cation. They are typically insoluble in aqueous solutions (water) and extremely stable making them useful in ceramic structures as simple as producing clay bowls to advanced electronics and in light weight structural components in aerospace and electrochemical applications such as fuel cells in which they exhibit ionic conductivity. Metal oxide compounds are basic High Purity (99.999%) Iron Oxide (FeO) Powderanhydrides and can therefore react with acids and with strong reducing agents in redox reactions. Iron Oxide is also available in pellets, pieces, powder, sputtering targets, tablets, and nanopowder (from American Elements' nanoscale production facilities). Iron Oxide is generally immediately available in most volumes. High purity, submicron and nanopowder forms may be considered. Additional technical, research and safety (MSDS) information is available.

Iron(II) Oxide Synonyms

Ferrous oxide, Iron monoxide, Gastromark, Oxoiron, Lautamasse, Iron(2+) oxide, Iron oxide, Siferrit, wüstite, wustite

Chemical Identifiers

Linear Formula FeO
MDL Number MFCD00016095
EC No. 215-721-8
Beilstein Registry No. N/A
Pubchem CID 14945
IUPAC Name Oxoiron
InchI Identifier InChI=1S/Fe.O

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Elements

See more Iron products. Iron (atomic symbol: Fe, atomic number: 26) is a Block D, Group 8, Period 4 element with an atomic weight of 55.845. The number of electrons in each of Iron's shells is 2, 8, 14, 2 and its electron configuration is [Ar] 3d6 4s2. Iron Bohr ModelThe iron atom has a radius of 126 pm and a Van der Waals radius of 194 pm. Iron was discovered by humans before 5000 BC. In its elemental form, iron has a lustrous grayish metallic appearance. Iron is the fourth most common element in the Earth's crust and the most common element by mass forming the earth as a whole. Iron is rarely found as a free element, since it tends to oxidize easily; it is usually found in minerals such as magnetite, hematite, goethite, limonite, or siderite.Elemental Iron Though pure iron is typically soft, the addition of carbon creates the alloy known as steel, which is significantly stronger.


February 22, 2019
Los Angeles, CA
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