Vanadium(III) oxide

• Divanadiumtrioxid
• Vanadium (III ) oxide
• Divanadintrioxid

Black, air-sensitive powder

Fixed

4.87 g · cm -3

1970 ° C

Very poor in water ( 0.1 g · l-1 at 20 ° C)

Risk

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Vanadium ( III) oxide is a chemical compound selected from the group of the oxides. It is in the form of a black powder.

Occurrence

In nature, vanadium (III ) oxide occurs in the form of the rare mineral Karelianit.

Production and representation

Vanadium ( III) oxide can ( V) oxide with hydrogen or carbon monoxide are produced by reduction of vanadium.

Properties

Vanadium (III ) oxide is a matt black powder with a crystal structure of corundum type ( aluminum oxide) and the space group R3c (a = 4.952, c = 14.003 Å). Is oxidized in air to vanadium ( V) oxide. At high temperatures it decomposes to other vanadium oxides.

Safety

Vanadium (III ) oxide as a carcinogen and mutagen in category 2.