Iron(II) nitrate

Iron(II) nitrate
Names
	Other names Ferrous nitrate;
Identifiers
CAS Number	14013-86-6; hexahydrate: 13520-68-8;
3D model (JSmol)	Interactive image; hexahydrate: Interactive image; nonahydrate: Interactive image;
ChemSpider	7991154; hexahydrate: 24294; nonahydrate: 25942803;
EC Number	233-899-5;
PubChem CID	9815404; hexahydrate: 26080; nonahydrate: 129774236;
UNII	hexahydrate: TH8VFW48GG;
CompTox Dashboard (EPA)	DTXSID70431140 ;
	InChI Key: MVFCKEFYUDZOCX-UHFFFAOYSA-N; InChI=1S/Fe.2NO3/c;22-1(3)4/q+2;2-1; hexahydrate: InChI=1S/Fe.2NO3.6H2O/c;22-1(3)4;;;;;;/h;;;61H2/q+2;2-1;;;;;; Key: SUOTZEJYYPISIE-UHFFFAOYSA-N; nonahydrate: InChI=1S/Fe.2NO3.9H2O/c;22-1(3)4;;;;;;;;;/h;;;91H2/q+2;2-1;;;;;;;;; Key: QZRHHEURPZONJU-UHFFFAOYSA-N;
	SMILES [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
Chemical formula	Fe(NO3)2
Molar mass	179.86 g/mol
Appearance	Green crystals (hexahydrate)
Melting point	60 °C (140 °F; 333 K) (hexahydrate)
Boiling point	61 °C (142 °F; 334 K) (decomposes)
Solubility in water	87.525 g/100 mL
Structure
Crystal structure	Orthorhombic
Thermochemistry
Std enthalpy of; formation (ΔfH⦵298)	-497.9 kJ/mol
Hazards
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	428 mg/kg (subcutaneous, rabbit)
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). Infobox references

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 serves as a ready source of ferrous ions.

^ ^a ^b Cite error: The named reference iron was invoked but never defined (see the help page).
^ Lide, David, ed. (2004). "4". CRC Handbook of Chemistry and Physics (Hardcover) (85th ed.). Taylor & Francis. p. 62. ISBN 9780849304859.
^ Herman Francis Mark; Anthony Standen (1963). Standen, Anthony (ed.). Encyclopedia of Chemical Technology. Interscience Publishers. Retrieved 16 February 2021.
^ 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.

[iron-1] Cite error: The named reference iron was invoked but never defined (see the help page).

[crc-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.

[2]

[1]

[3]

[4]

Names


Other names Ferrous nitrate
Identifiers
CAS Number	14013-86-6 hexahydrate: 13520-68-8
3D model (JSmol)	Interactive image hexahydrate: Interactive image nonahydrate: Interactive image
ChemSpider	7991154 hexahydrate: 24294 nonahydrate: 25942803
EC Number	233-899-5
PubChem CID	9815404 hexahydrate: 26080 nonahydrate: 129774236
UNII	hexahydrate: TH8VFW48GG
CompTox Dashboard (EPA)	DTXSID70431140
InChI Key: MVFCKEFYUDZOCX-UHFFFAOYSA-N InChI=1S/Fe.2NO3/c;22-1(3)4/q+2;2-1 hexahydrate: InChI=1S/Fe.2NO3.6H2O/c;22-1(3)4;;;;;;/h;;;61H2/q+2;2-1;;;;;; Key: SUOTZEJYYPISIE-UHFFFAOYSA-N nonahydrate: InChI=1S/Fe.2NO3.9H2O/c;22-1(3)4;;;;;;;;;/h;;;91H2/q+2;2-1;;;;;;;;; Key: QZRHHEURPZONJU-UHFFFAOYSA-N
SMILES [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
Chemical formula	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)
Solubility in water	87.525 g/100 mL
Structure
Crystal structure	Orthorhombic^[3]
Thermochemistry
Std enthalpy of formation (Δ_fH^⦵₂₉₈)	-497.9 kJ/mol^[1]
Hazards
Lethal dose or concentration (LD, LC):
LD₅₀ (median dose)	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). Infobox references

Iron(II) nitrate

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