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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Reference substances

Reference substances

Currently viewing:
IUPAC name:
Iron monoxide

Inventory

EC number:
215-721-8
EC name:
Iron oxide
CAS number:
1345-25-1
CAS number:
1345-25-1
Synonyms
Names:
Ferrous oxide
Iron (II) oxide
Identifier:
IUPAC name
iron oxide
Identifier:
other: InChl
1S/Fe.H2O/h;1H2
Identifier:
other: SMILES notation
O.[Fe]
Identifier:
other:
ferrous oxide

Molecular and structural information

Molecular formula:
FeO
Molecular weight:
ca. 71.85
SMILES notation:
O=[Fe]
InChl:
1/Fe.O/rFeO/c1-2
Structural formula:
Chemical structure

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