Iron(II) nitrate

Iron(II) nitrate

Hexahydrate
Names
Other names
  • Ferrous nitrate
Identifiers
3D model (JSmol)
ChemSpider
EC Number
  • 233-899-5
UNII
  • Key: MVFCKEFYUDZOCX-UHFFFAOYSA-N
  • InChI=1S/Fe.2NO3/c;2*2-1(3)4/q+2;2*-1
  • hexahydrate: InChI=1S/Fe.2NO3.6H2O/c;2*2-1(3)4;;;;;;/h;;;6*1H2/q+2;2*-1;;;;;;
    Key: SUOTZEJYYPISIE-UHFFFAOYSA-N
  • nonahydrate: InChI=1S/Fe.2NO3.9H2O/c;2*2-1(3)4;;;;;;;;;/h;;;9*1H2/q+2;2*-1;;;;;;;;;
    Key: QZRHHEURPZONJU-UHFFFAOYSA-N
  • [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[Fe+2]
  • hexahydrate: [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].O.O.O.O.O.O.[Fe+2]
  • nonahydrate: [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].O.O.O.O.O.O.O.O.O.[Fe+2]
Properties
Fe(NO3)2
Molar mass 179.86 g/mol
Appearance Green crystals (hexahydrate)
Melting point 60 °C (140 °F; 333 K)[2] (hexahydrate)
Boiling point 61 °C (142 °F; 334 K)[1] (decomposes)
87.525 g/100 mL
Structure
Orthorhombic[3]
Thermochemistry
-497.9 kJ/mol[1]
Hazards
Lethal dose or concentration (LD, LC):
428 mg/kg (subcutaneous, rabbit)[4]
Related compounds
Other anions
 Iron(II) phosphate
Other cations
 Manganese(II) nitrate
Cobalt(II) nitrate
Related compounds
 Iron(III) nitrate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Iron(II) nitrate is the nitrate salt of iron(II). It is commonly encountered as the green hexahydrate, Fe(NO3)2·6H2O, which is a metal aquo complex, however it is not commercially available unlike iron(III) nitrate due to its instability to air. The salt is soluble in water and serves as a ready source of ferrous ions.

  1. ^ a b Cite error: The named reference iron was invoked but never defined (see the help page).
  2. ^ Lide, David, ed. (2004). "4". CRC Handbook of Chemistry and Physics (Hardcover) (85th ed.). Taylor & Francis. p. 62. ISBN 9780849304859.
  3. ^ Herman Francis Mark; Anthony Standen (1963). Standen, Anthony (ed.). Encyclopedia of Chemical Technology. Interscience Publishers. Retrieved 16 February 2021.
  4. ^ National Institute for Occupational Safety and Health (1981). Registry of Toxic Effects of Chemical Substances. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health. p. 548. Retrieved 16 February 2021.