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COBALT(III) OXIDE BLACK

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CAS:1308-04-9
Purity:99% Package:100g,500g,1KG,10KG,100KG
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CAS:1308-04-9
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CAS:1308-04-9
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COBALT(III) OXIDE BLACK Basic information
Uses Preparation Reactions
Product Name:COBALT(III) OXIDE BLACK
Synonyms:Cobolt-3-oxide;cobalitic oxide;COBALT(III) OXIDE BL;BLACK COBALT OXIDE;COBALT SESQUIOXIDE;COBALT OXIDE, GRAY;COBALT TETRAOXIDE;COBALT(II,III) OXIDE
CAS:1308-04-9
MF:Co2O3
MW:165.86
EINECS:215-156-7
Product Categories:Inorganics
Mol File:1308-04-9.mol
COBALT(III) OXIDE BLACK Structure
COBALT(III) OXIDE BLACK Chemical Properties
Melting point 895 °C (dec.)(lit.)
density 6.11 g/mL at 25 °C(lit.)
form powder
Water Solubility insoluble H2O; soluble conc acids [HAW93]
Safety Information
Hazard Codes Xn
Risk Statements 36/37/38-40-43-22
Safety Statements 26-36/37/39-36/37
WGK Germany 1
RTECS GG2500000
MSDS Information
ProviderLanguage
SigmaAldrich English
ALFA English
COBALT(III) OXIDE BLACK Usage And Synthesis
UsesCobalt(III) oxide is used as a pigment; for glazing porcelain and pottery; and for coloring enamels.
PreparationCobalt(III) oxide is prepared by heating cobalt compounds at low temperatures in air.
ReactionsHeating with hydrogen, carbon or carbon monoxide reduces the oxide to cobalt metal.
Co2O3 + 3H2→ 2Co + 3H2O
Co2O3 + 3CO→ 2Co + 3CO
2Co2O3 + 3C→ 4Co + 3CO2
Strong heating in air converts cobalt(III) oxide to tricobalt tetroxide.
Reactions with mineral acids produce their Co3+ salts:
Co2O3 + 6HCl → 2CoCl3 + 3H2O
Chemical PropertiesSteel-gray or black powder.Soluble in concentrated acids; insoluble in water.
UsesPigment, coloring enamels, glazing pottery.
DefinitionSometimes incorrectly called cobalt peroxide.
Safety Profile: Moderately toxic by intraperitoneal and subcutaneous routes. Questionable carcinogen. Violent reaction with hydrogen peroxide. The oxide increases the sensitivity of nitroalkanes (e.g., nitromethane, nitroethane, and 1 nitropropane) to heat or detonation. See also COBALT COMPOUNDS.
Tag:COBALT(III) OXIDE BLACK(1308-04-9) Related Product Information
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