Iron(II) fluoride

Iron(II) fluoride
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.029.232 Edit this at Wikidata
UNII
  • InChI=1S/2FH.Fe/h2*1H;/q;;+2/p-2 checkY
    Key: FZGIHSNZYGFUGM-UHFFFAOYSA-L checkY
  • InChI=1/2FH.Fe/h2*1H;/q;;+2/p-2
    Key: FZGIHSNZYGFUGM-NUQVWONBAX
  • [Fe+2].[F-].[F-]
Properties
FeF2
Molar mass 93.84 g/mol (anhydrous)
165.902 g/mol (tetrahydrate)
Appearance colorless transparent crystals[1]
Density 4.09 g/cm3 (anhydrous)
2.20 g/cm3 (tetrahydrate)
Melting point 970 °C (1,780 °F; 1,240 K) (anhydrous)
100 °C (tetrahydrate)[3]
Boiling point 1,100 °C (2,010 °F; 1,370 K) (anhydrous)
2.36×10−6[2]
Solubility insoluble in ethanol, ether;
dissolves in HF
+9500.0·10−6 cm3/mol
Structure
Rutile (tetragonal), tP6
P42/mnm, No. 136
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 Causes severe skin burns & eye damage;
Hazardous decomposition products formed under fire conditions- Iron oxides[4]
GHS labelling:
GHS05: CorrosiveGHS08: Health hazardGHS09: Environmental hazard
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 4: Very short exposure could cause death or major residual injury. E.g. VX gasFlammability 0: Will not burn. E.g. waterInstability 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g. white phosphorusSpecial hazard COR: Corrosive; strong acid or base. E.g. sulfuric acid, potassium hydroxide
4
0
2
COR
Flash point not applicable[4]
Related compounds
Other anions
 Iron(II) chloride
Iron(II) bromide
Iron(II) iodide
Iron(II) oxide
Other cations
 Manganese(II) fluoride
Cobalt(II) fluoride
Related compounds
 Iron(III) fluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Iron(II) fluoride or ferrous fluoride is an inorganic compound with the molecular formula FeF2. It forms a tetrahydrate FeF2·4H2O that is often referred to by the same names. The anhydrous and hydrated forms are white crystalline solids.[1][5]

  1. ^ a b Cite error: The named reference pentay was invoked but never defined (see the help page).
  2. ^ John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99 ed.). CRC Press. pp. 5–188. ISBN 978-1138561632.
  3. ^ Pradyot Patnaik. Handbook of Inorganic Chemicals. McGraw-Hill, 2002, ISBN 0-07-049439-8
  4. ^ a b Sigma-Aldrich. "Material Safety Data Sheet". Sigma-Aldrich. Retrieved 5 April 2011.
  5. ^ Dale L. Perry (1995), "Handbook of Inorganic Compounds", page 167. CRC Press. ISBN 9780849386718