Yttrium(III) fluoride

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Yttrium(III) fluoride
Yttrium(III) fluoride
Other names
yttrium trifluoride
3D model (JSmol)
ECHA InfoCard 100.033.855
EC Number
  • 237-257-5
Molar mass 145.90 g mol−1
Appearance white powder
Density 4.01 g cm−3
Melting point 1,387 °C (2,529 °F; 1,660 K)
Boiling point 2,230 °C (4,050 °F; 2,500 K)
Solubility in acid soluble
1.51 (500 nm)
Orthorhombic, oP16, SpaceGroup = Pnma, No. 62
GHS pictograms GHS07: Harmful
GHS Signal word Warning
H302, H312, H315, H319, H332, H335
P261, P264, P270, P271, P280, P301+312, P302+352, P304+312, P304+340, P305+351+338, P312, P321, P322, P330, P332+313, P337+313, P362, P363, P403+233, P405, P501
Flash point Non-flammable
Related compounds
Other anions
Yttrium(III) chloride
Yttrium(III) bromide
Yttrium(III) iodide
Other cations
Scandium(III) fluoride
Lanthanum(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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Infobox references

Yttrium(III) fluoride is an inorganic chemical compound with the chemical formula YF3. It is not known naturally in 'pure' form. The fluoride minerals containing essential yttrium include tveitite-(Y) (Y,Na)6Ca6Ca6F42 and gagarinite-(Y) NaCaY(F,Cl)6. Sometimes mineral fluorite contains admixtures of yttrium.


YF3 can be produced by reacting fluorine with yttria or yttrium hydroxide with hydrofluoric acid.

Y(OH)3 + 3HF → YF3 + 3H2O

Occurrence and uses[edit]

It occurs as the mineral waimirite-(Y).[1]

Yttrium(III) fluoride can be used for the production of metallic yttrium, thin films, glasses and ceramics.


Conditions/substances to avoid are: acids, active metals and moisture.