Copper(II) fluoride
Unit cell of the anhydrous form
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Ball-and-stick model of crystal packing in the anhydrous form
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Dihydrate
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| Names | |
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| IUPAC name
Copper difluoride
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| Other names
Cupric fluoride; Copper fluoride; Copper (2+) Difluoride
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| Identifiers | |
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3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.029.225 |
| EC Number |
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PubChem CID
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| UNII |
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CompTox Dashboard (EPA)
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| Properties | |
| CuF2 | |
| Molar mass | 101.543 g/mol (anhydrous) 137.573 g/mol (dihydrate) |
| Appearance | White crystalline powder When hydrated: Blue |
| Density | 4.23 g/cm3 (anhydrous) 2.934 g/cm3 (dihydrate) |
| Melting point | 836 °C (1,537 °F; 1,109 K) (anhydrous) 130 °C (dihydrate, decomposes) |
| Boiling point | 1,676 °C (3,049 °F; 1,949 K) (anhydrous) |
| +1050.0·10−6 cm3/mol | |
| Thermochemistry | |
Std enthalpy of
formation (ΔfH⦵298) |
-63.8 kcal/mol (gas) |
Enthalpy of fusion (ΔfH⦵fus)
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13 kcal/mol |
Enthalpy of sublimation (ΔfHsublim)
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63.9 kcal/mol |
| Hazards | |
| GHS labelling: | |
| Danger | |
| H302, H314, H332 | |
| P260, P264, P270, P271, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P363, P405, P501 | |
| NIOSH (US health exposure limits): | |
PEL (Permissible)
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TWA 1 mg/m3 (as Cu) |
REL (Recommended)
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TWA 1 mg/m3 (as Cu) |
IDLH (Immediate danger)
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TWA 100 mg/m3 (as Cu) |
| Related compounds | |
Other anions
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Copper(II) bromide Copper(II) chloride |
Other cations
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Silver(II) fluoride Cobalt(II) fluoride |
Related compounds
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Copper(I) fluoride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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Copper(II) fluoride or cupric fluoride is an inorganic compound with the chemical formula CuF2. The anhydrous form is a white, ionic, crystalline, hygroscopic salt with a distorted rutile-type crystal structure, similar to other fluorides of chemical formulae MF2 (where M is a metal). The dihydrate, CuF2·2H2O, is blue in colour.