Ammonium hexafluoroferrate is an inorganic chemical compound with the chemical formula (NH4)3FeF6.
Synthesis
Ammonium hexafluoroferrate can be obtained by reacting ferric fluoride trihydrate and ammonium fluoride in water.
Physical properties
Ammonium hexafluoroferrate is isomorphous with the analogous compounds of aluminum and trivalent titanium, vanadium, and chromium. It crystallizes in a cubic lattice.
The compound's thermal decomposition products are ferrous fluoride and ferric fluoride.
Chemical properties
The compound reacts with xenon difluoride to produce NH4FeF4, N2, Xe, and HF.
Uses
Ammonium hexafluoroferrate is used as a fire retardant.
References
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