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1308-04-9[O]=[Co][O][Co]=[O]UPWOEMHINGJHOB-UHFFFAOYSA-N1308-04-9Steel-gray or black powder.Soluble in concentrated acids; insoluble in water.
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개요Neither the oxide Co2O3 nor the hydroxide Co(OH)3 is definitely established. The oxidation of cobalt(II) hydroxide in aqueous suspension with, for example, peroxides, or the destruction of a cobalt(III) complex with alkali gives a brown or black powder Co2O3.aq which upon drying at 150° yields the monohydrate Co2O3.H2O; this is probably best formulated as CoO(OH). When heated further in attempts to dehydrate it, the "monohydrate" begins to evolve oxygen (as well as water) at 300° with the formation of black Co3O4. When heated to 100° in air cobalt(II) hydroxide is converted to dark brown CoO(OH).
용도Pigment, coloring enamels, glazing pottery.
Cobalt(III) oxide is prepared by heating cobalt compounds at low temperatures in air.
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정의Sometimes incorrectly called cobalt peroxide.