Cobalt(III) fluoride

Cobalt trifluoride

Light brown powder

Fixed

  • 3.88 g · cm -3 at 25 ° C.
  • 2.19 g · cm -3 at 25 ° C. (dihydrate )

927 ° C

Reacts with water

Risk

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Cobalt (III ) fluoride is a chemical compound of the cobalt from the group of fluorides.

Production and representation

Cobalt (III ) fluoride can be obtained by reaction of the cobalt (II ) fluoride, cobalt (II ) chloride or cobalt (III ) oxide obtained by fluorine.

Properties

Cobalt (III ) fluoride is a light brown powder, which immediately turns dark brown on exposure to moist air. Therefore, the pure substance is kept hermetically sealed in containers made ​​of glass, quartz or metal. In a fluorine gas stream at 600-700 ° C, it evaporates, where it breaks down before substantially in cobalt (II ) fluoride and fluorine. With water, it reacts to oxygen evolution, with next to it also forms cobalt ( III ) hydroxide. It also occurs as a dihydrate. Cobalt (III ) fluoride is crystallized in a vanadium (III ) fluoride layer structure.

Use

Cobalt (III ) fluoride can also be used for the fluorination of organic compounds.

CAS registry number PubChem Dangerous Substances Directive (67/548/EEC) Cobalt(II) fluoride Cobalt(III) oxide Vanadium(III) fluoride CRC Handbook of Chemistry and Physics Cobalt(II) bromide
195296
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