About: Cobalt(III) oxide

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Cobalt(III) oxide is the inorganic compound with the formula of Co2O3. Although only two oxides of cobalt are well characterized, CoO and Co3O4, procedures claiming to give Co2O3 have been described. Thus treatment of Co(II) salts such as cobalt(II) sulfate with an aqueous solution of sodium hypochlorite (also known as bleach) gives a black solid: 2CoSO4 + 4NaOH + NaOCl → Co2O3 + 2Na2SO4 + NaCl Some formulations of the catalyst hopcalite contain "Co2O3". Some studies have been unable to synthesize the compound, and report that it is theoretically unstable. Co2O3 + 3H2SO4 → Co2[SO4]3 + 3H2O

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rdf:type	Thing dul:ChemicalObject chemical substance Chemical compound yago:WikicatCobaltCompounds yago:WikicatOxides yago:Abstraction100002137 yago:Chemical114806838 yago:Cognition100023271 yago:Compound105870180 yago:Compound114818238 yago:Concept105835747 yago:Content105809192 yago:Idea105833840 yago:Material114580897 yago:Matter100020827 yago:Oxide114971519 yago:Part113809207 yago:PhysicalEntity100001930 yago:PsychologicalFeature100023100 yago:Relation100031921 chemical compound yago:Substance100019613 yago:Whole105869584 umbel-rc:ChemicalSubstanceType
rdfs:label	Cobalt(III)-oxid (de) Óxido de cobalto(III) (es) Cobalt(III) oxide (en) Oxyde de cobalt(III) (fr) 酸化コバルト(III) (ja) Kobalt(III)oxide (nl) Оксид кобальта(III) (ru) Оксид кобальту(III) (uk) 三氧化二钴 (zh)
rdfs:comment	Cobalt(III)-oxid ist eine chemische Verbindung aus der Gruppe der Oxide des Cobalts. Die reine Form dieser Verbindung ist bisher nicht bekannt. (de) El óxido de cobalto(III) es un compuesto inorgánico con la fórmula química Co2O3. Aunque sólo dos óxidos de cobalto están bien caracterizados, CoO y Co3O4, se han descripto procedimientos que pretenden sintetizar como producto Co2O3. Algunas formulaciones del catalizador hopcalita contienen esta sustancia. (es) 酸化コバルト(III)(Cobalt(III) oxide, Co2O3)は、次亜塩素酸ナトリウム水溶液に硝酸コバルト(II)を加えることによって生成する潮解性の黒色固体である。天然にはほとんど存在しない。触媒や酸化剤として使われる。 (ja) Kobalt(III)oxide (Co2O3) is een oxide van kobalt. De stof komt voor als een zwart poeder. (nl) Оксид кобальта(III) — неорганическое соединение, оксид металла кобальта с формулой Co2O3, чёрные кристаллы,не растворимые в воде. (ru) 三氧化二鈷（Co2O3），是鈷的黑色氧化物，常用於玻璃、陶磁製品的上彩，也就是知名的鈷藍色，此種特製鈷藍玻璃亦用於精細的玻璃加工業中做為濾光眼鏡以去除熱玻璃所發出的鈉黃光，讓操作員更能看清楚玻璃的細節。 (zh) Окси́д ко́бальту(III), ко́бальт(III) окси́д — неорганічна сполука складу Co2O3. Являє собою чорні, гексагональні кристали. Більшу реакційну здатність сполука має у вигляді кристалогідрату . (uk) Cobalt(III) oxide is the inorganic compound with the formula of Co2O3. Although only two oxides of cobalt are well characterized, CoO and Co3O4, procedures claiming to give Co2O3 have been described. Thus treatment of Co(II) salts such as cobalt(II) sulfate with an aqueous solution of sodium hypochlorite (also known as bleach) gives a black solid: 2CoSO4 + 4NaOH + NaOCl → Co2O3 + 2Na2SO4 + NaCl Some formulations of the catalyst hopcalite contain "Co2O3". Some studies have been unable to synthesize the compound, and report that it is theoretically unstable. Co2O3 + 3H2SO4 → Co2[SO4]3 + 3H2O (en) L'oxyde de cobalt(III) est un composé chimique de formule Co2O3. Il s'agit d'un solide cristallisé se présentant sous la forme d'une poudre gris sombre pratiquement insoluble dans l'eau et qui se décompose au-dessus de 895 °C en oxygène O2 pour donner les autres oxydes de cobalt. Il en existe un monohydrate Co2O3·H2O de couleur brune, qui se forme en solution basique à partir de l'hydroxyde de cobalt(II) Co(OH)2 par exposition à l'air libre et, plus rapidement, en présence d'oxydants tels que le chlore Cl2, le brome Br2 ou encore le peroxyde d'hydrogène H2O2. (fr)
foaf:name	Cobalt(III) oxide (en)
name	Cobalt oxide (en)
foaf:depiction
dcterms:subject	Sesquioxides Transition metal oxides Cobalt(III) compounds
Wikipage page ID	13994654 (xsd:integer)
Wikipage revision ID	1113259747 (xsd:integer)
Link from a Wikipage to another Wikipage	Hopcalite Inorganic compound Corundum Cobalt(II) oxide Cobalt(II) sulfate Cobalt(II,III) oxide Cobalt Oxide Nanoparticles Sesquioxides Transition metal oxides Cobalt(III) compounds Sodium hypochlorite Pearson symbol
sameAs	Cobalt(III) oxide Cobalt(III) oxide Cobalt(III) oxide Cobalt(III) oxide Cobalt(III) oxide Cobalt(III) oxide Cobalt(III) oxide Cobalt(III) oxide Cobalt(III) oxide Cobalt(III) oxide Cobalt(III) oxide Cobalt(III) oxide Cobalt(III) oxide Cobalt(III) oxide Cobalt(III) oxide Cobalt(III) oxide Cobalt(III) oxide Cobalt(III) oxide Cobalt(III) oxide Cobalt(III) oxide Cobalt(III) oxide
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thumbnail	wiki-commons:Special:FilePath/Cobalt(III)_oxide.jpg?width=300

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