| Identification | More | [Name]
Cupric fluoride | [CAS]
7789-19-7 | [Synonyms]
Copper difluoride
COPPER FLUORIDE
COPPER (II) FLUORIDE
COPPER(II) FLUORIDE TRIHYDRATE
CUPRIC FLUORIDE
Copper fluoride (CuF2)
copperfluoride(cuf2)
CuF2
Copper(II) fluoride anhydrous
Copperfluorideanhydrousmeshpowder
Iron(Ⅲ) fluoride
CUPRIC FLUORIDE ANHYDROUS
Copper(II) fluoride anhydrous, 99.5%
CUPRIC FLUORIDE, 99.5%
Copper(II)fluoride,anhydrous,99%
Copper(II) fluoride anhydrous 99%
copperfluoride,anhydrous
COPPER(II) FLUORIDE, ANHYDROUS: 99.5%,-100 MESH POWDER
COPPER (II) FLOURIDE
Coper difluoride | [EINECS(EC#)]
232-147-3 | [Molecular Formula]
CuF2 | [MDL Number]
MFCD00191949 | [Molecular Weight]
101.54 | [MOL File]
7789-19-7.mol |
| Chemical Properties | Back Directory | [Definition]
The anhydrous form, CuF2, is also available. | [Appearance]
Blue powder | [Melting point ]
950 °C (dec.)(lit.) | [Boiling point ]
950 °C | [density ]
4.23 g/mL at 25 °C(lit.)
| [form ]
Powder | [color ]
White | [Specific Gravity]
4.85 | [Water Solubility ]
SOLUBLE IN COLD WATER | [Sensitive ]
Hygroscopic | [Merck ]
14,2638 | [Exposure limits]
ACGIH: TWA 1 mg/m3; TWA 2.5 mg/m3
NIOSH: IDLH 100 mg/m3; IDLH 250 mg/m3; TWA 1 mg/m3 | [Stability:]
hygroscopic | [Uses]
Ceramics, enamels, flux in metallurgy, highenergy batteries, fluorinating agent. | [CAS DataBase Reference]
7789-19-7(CAS DataBase Reference) | [NIST Chemistry Reference]
Copper difluoride(7789-19-7) | [EPA Substance Registry System]
7789-19-7(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
C,Xi | [Risk Statements ]
R32:Contact with acids liberates very toxic gas.
R34:Causes burns.
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S24/25:Avoid contact with skin and eyes . | [RIDADR ]
UN 3260 8/PG 3
| [WGK Germany ]
3
| [F ]
3-10 | [Hazard Note ]
Hygroscopic | [TSCA ]
Yes | [HazardClass ]
6.1 | [PackingGroup ]
III | [HS Code ]
2826199090 |
| Hazard Information | Back Directory | [Hazard]
A poison. | [Chemical Properties]
Cupric fluoride is blue powder
| [General Description]
Copper fluoride is a monoclinic weak ferromagnet. The structural properties were investigated by neutron diffraction. |
| Questions And Answer | Back Directory | [Physical Properties]
Cupric fluoride is a white crystalline solid; monoclinic crystals; turns blue in moist air; sparingly soluble in water (hydrolyzes in hot water). The dihydrate is blue monoclinic crystal;slightly soluble in water.
| [Uses]
Copper(II) fluoride is used in cathodes in nonaqueous galvanic cells, such as high energy batteries. It also is used as a fluorinating agent. The dihydrate is used in welding and brazing fluxes and is added to cast iron to improve its strength. Another application of this compound is as opacifier in ceramics, glasses and enamels.
| [Preparation]
Copper(II) fluoride is prepared by direct fluorination of copper at high temperatures:
Cu + F2 → CuF2
It also may be prepared by passing hydrogen fluoride gas over copper(II) oxide at 400°C:
CuO + 2HF→ CuF2 + H2O
Alternatively, it may be made by treating copper carbonate with hydrofluoric acid followed by crystallization.
CuCO3 + 2HF(aq) → CuF2 + H2O + CO2
| [Reactions]
Copper(II) fluoride loses fluorine as it melts. At 950°C it converts to copper( I) fluoride (cuprous fluoride), CuF:
2CuF2 →2CuF + F2
Also, when it is heated at 1,200°C in an atmosphere of hydrogen fluoride, copper( I) fluoride is produced.
Reaction with water is slow, forming a hydrate. The product decomposes slowly at ambient temperature with liberating hydrogen fluoride, leaving a basic fluoride, CuFOH. The dihydrate hydrolyzes to oxyfluoride Cu(OF)2 in hot water.
| [Toxicity]
Cupric fluoride is moderately toxic by ingestion and other routes of exposure.
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