Yttrium(III) fluoride
-fluorid.png) | |
| Names | |
|---|---|
| Other names
yttrium trifluoride | |
| Identifiers | |
13709-49-4  | |
| ChemSpider | 75502 |
| |
| Jmol-3D images | Image |
| PubChem | 83679 |
| |
| 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 | |
| Crystal structure | Orthorhombic, oP16, SpaceGroup = Pnma, No. 62 |
| Hazards | |
| EU Index | Not listed |
| 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 noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa) | |
verify (what is: / ?) | |
| 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.
Synthesis
YF3 can be produced by reacting fluorine with yttria or yttrium hydroxide with hydrofluoric acid.
- Y(OH)3 + 3HF → YF3 + 3H2O
Uses
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.
References
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