Yttrium(III) fluoride
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.
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| Names | |
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| Other names
yttrium trifluoride | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.033.855 |
| EC Number |
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PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| YF3 | |
| 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) |
| insoluble | |
| Solubility in acid | soluble |
Refractive index (nD) |
1.51 (500 nm) |
| Structure | |
| Orthorhombic, oP16, SpaceGroup = Pnma, No. 62 | |
| Hazards | |
| GHS pictograms |  |
| GHS Signal word | Warning |
GHS hazard statements |
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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Synthesis
YF3 can be produced by reacting fluorine with yttria or yttrium hydroxide with hydrofluoric acid.
- Y(OH)3 + 3HF → YF3 + 3H2O
Occurrence and uses
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.
Hazards
Conditions/substances to avoid are: acids, active metals and moisture.
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