| Identifiers | |
|---|---|
3D model (JSmol) | |
| ChemSpider | |
| ECHA InfoCard | 100.033.942 |
| EC Number |
|
| UNII | |
| |
| |
| Properties | |
| HoF3 | |
| Molar mass | 221.93 |
| Appearance | yellowish powder |
| Density | 7.64g/cm3[1] |
| Melting point | 1145 °C[2] |
| Boiling point | >2200 °C[1] |
| Hazards | |
| GHS labelling: | |
  | |
| Danger | |
| H301,H311,H315,H319,H331,H335 | |
| P261,P264,P270,P271,P280,P301+P310,P302+P352,P304+P340,P305+P351+P338,P311,P312,P321,P322,P330,P332+P313,P337+P313,P361,P362,P363,P403+P233,P405,P501 | |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Holmium(III) fluoride is aninorganic compound with achemical formula of HoF3.
Holmium(III) fluoride can be produced by reactingholmium oxide andammonium fluoride, then crystallising it from the ammonium salt formed in solution:[3]
It can also be prepared by directly reactingholmium withfluorine:[4]
Holmium(III) fluoride is a yellowish powder that is insoluble in water.[5] It has anorthorhombic crystal system (corresponding to β-YF3[6]) with thespace group Pnma (space group no. 62).[7] However, there is also a trigonal low-temperature form of thelanthanum(III) fluoride type.[3]
