Structure via PubChem · Public domain (PubChem)
Chemical data
- Formula
- FeH2O2
- Molecular weight
- 89.86 g/mol
- IUPAC name
- iron(2+) dihydroxide
- SMILES
- [OH-].[OH-].[Fe+2]
- InChIKey
- NCNCGGDMXMBVIA-UHFFFAOYSA-L
- Polar surface area
- 2 Ų
- H-bond donors
- 2
- H-bond acceptors
- 2
- Formal charge
- 0
via PubChem
Wikidata facts
- Subclass of
- hydroxide salt
- Has part
- hydrogen
- Mass
- 89.94
- Image
- Hydroxid železnatý.PNG
Show 8 more facts
- canonical SMILES
- [OH-].[OH-].[Fe+2]
- crystal system
- trigonal crystal system
- Commons category
- Iron(II) hydroxide
- density
- 3.4
- chemical formula
- FeH₂O₂
- Mohs' hardness
- 3.75
- decomposition point
- 175
- standard enthalpy of formation
- -574
via Wikidata · CC0
~3 min read
Encyclopedic overview
Iron (II) hydroxide or ferrous hydroxide is an inorganic compound with the formula Fe(OH)2. It is produced when iron (II) salts, from a compound such as iron(II) sulfate, are treated with hydroxide ions. Iron(II) hydroxide is a white solid, but even traces of oxygen impart a greenish tinge. The air-oxidised solid is sometimes known as "green rust".
Preparation and reactions
Excerpted from Wikipedia’s “ferrous hydroxide” article, available under the CC BY-SA 4.0 licence.