Chemistry:Cerium(III) fluoride

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Cerium(III) fluoride
Cerium(III) fluoride.jpg
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IUPAC name
Cerium(III) fluoride
Other names
Cerium trifluoride
Molar mass 197.12 g/mol
Density 6.16 g/cm3 (at 20 °C)
Melting point 1,460 °C (2,660 °F; 1,730 K)[1]
Related compounds
Related compounds
Lanthanum trifluoride
GHS pictograms GHS07: HarmfulGHS09: Environmental hazard
NFPA 704 (fire diamond)
Flammability code 0: Will not burn. E.g. waterHealth code 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasReactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no codeNFPA 704 four-colored diamond
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Cerium(III) fluoride (or cerium trifluoride), CeF3, is an ionic compound of the rare earth metal cerium and fluorine.

It appears as a mineral in the form of fluocerite-(Ce) - a very rare mineral species related mainly to pegmatites and rarely to oxidation zones of some polymetallic ore deposits.[2][3] CeF3 may be used as a Faraday rotator material in the visible, near-infrared and mid-infrared spectral range.[4][5]


  1. Holleman-Wiberg, 102. edition, p. 1942
  2. "Fluocerite-(Ce)". 
  3. "List of Minerals". 21 March 2011. 
  4. Vojna, David; Yasuhara, Ryo; Slezák, Ondřej; Mužík, Jiří; Lucianetti, Antonio; Mocek, Tomáš (2017). "Verdet constant dispersion of CeF3 in the visible and near-infrared spectral range". Optical Engineering 56 (6): 067105. doi:10.1117/1.oe.56.6.067105. Bibcode2017OptEn..56f7105V. 
  5. Vojna, David; Slezák, Ondřej; Yasuhara, Ryo; Furuse, Hiroaki; Lucianetti, Antonio; Mocek, Tomáš (2020). "Faraday Rotation of Dy2O3, CeF3 and Y3Fe5O12 at the Mid-Infrared Wavelengths". Materials 13 (23): 5324. doi:10.3390/ma13235324. PMID 33255447. Bibcode2020Mate...13.5324V.