| Identification | More | [Name]
COBALT(III) FLUORIDE | [CAS]
10026-18-3 | [Synonyms]
Cobalt(Ⅲ)fluoride
COBALT FLUORIDE
COBALT FLUORIDE BROWN
COBALTIC FLUORIDE
COBALT(III) FLUORIDE
COBALT TRIFLUORIDE
Cobalt fluoride (CoF3)
cobaltfluoride(cof3)
Cobaltic trifluoride
CoF3
Cobalt(III)fluorideanhydrous
Kobalt(III)-fluorid
Cobalt(III)fluoride,99%
Cobalt(III) fluoride 99%
Cobalt(III) trifluoride
Cobaltfluoridetanpowder | [EINECS(EC#)]
233-062-4 | [Molecular Formula]
CoF3 | [MDL Number]
MFCD00010942 | [Molecular Weight]
115.93 | [MOL File]
10026-18-3.mol |
| Chemical Properties | Back Directory | [Appearance]
brown powder | [Melting point ]
927°C | [density ]
3.88 g/mL at 25 °C(lit.)
| [solubility ]
reacts with H2O; soluble in ethanol,ethyl ether, benzene | [form ]
Powder | [color ]
Light brown | [Specific Gravity]
3.88 | [Water Solubility ]
Insoluble in water. | [Sensitive ]
Hygroscopic | [Merck ]
14,2430 | [Exposure limits]
ACGIH: TWA 0.02 mg/m3; TWA 2.5 mg/m3
NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3 | [Stability:]
hygroscopic | [CAS DataBase Reference]
10026-18-3(CAS DataBase Reference) | [EPA Substance Registry System]
Cobalt fluoride (CoF3) (10026-18-3) |
| Safety Data | Back Directory | [Hazard Codes ]
C,T,O | [Risk Statements ]
R34:Causes burns. | [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) . | [RIDADR ]
UN 3260 8/PG 2
| [WGK Germany ]
3
| [F ]
21 | [Hazard Note ]
Toxic/Corrosive/Oxidiser | [TSCA ]
Yes | [HazardClass ]
5.1 | [PackingGroup ]
III | [HS Code ]
28261990 |
| Hazard Information | Back Directory | [Hazard]
Strong irritant to tissue. | [Chemical Properties]
brown powder | [Chemical Properties]
The heat of formation is —187 kcal mole-1 and the magnetic moment is 1-60
B.M. at 90°K rising to 2.46 B.M. at 293°K; it is thus a high spin compound but not magnetically dilute.
Anhydrous cobalt(III) fluoride turns dark in the presence of traces of water and reacts violently with the liquid-evolving oxygen. When heated in an inert atmosphere above 350°, cobalt(II) fluoride is formed. It reacts vigorously with many elements, e.g. Al, P, As, S, I, being reduced to cobalt(II) fluoride. It is insoluble in alcohol, ether and benzene and is a useful fluorinating agent in organic chemistry. | [Physical properties]
Light brown hexagonal crystal; density 3.88 g/cm3; moisture sensitive; stable in dry air; melts at 927°C; reacts with water. | [Uses]
Important fluorinating agent, particularly for complete fluorination of hydrocarbons by the Fowler process. | [Preparation]
Cobalt(III) fluoride may be prepared by reaction of elemental fluorine with cobalt(II) fluoride, cobalt(II) chloride or cobalt(III) oxide at 300 to 400°C.
2CoF2 + F2 → 2CoF3
2CoCl2 + 3F2 → 2CoF3 + 2Cl2
It should be stored in a sealed glass ampule, free from moisture.
Electrolytic oxidation of cobalt(II) fluoride in 40% hydrofluoric acid yields hydrated cobalt(III) fluoride, CoF3·3.5H2O (3.5 is the stoichiometric amount of water per CoF3 molecule in the crystal lattice).
| [Structure and conformation]
It forms hexagonal crystals of density 3.89, isomorphous with iron(III) and
aluminium(III) fluorides, the cobalt atoms being octahedraily surrounded by fluorine atoms. |
|
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