It may also be prepared by precipitating the hydroxide, followed by thermal dehydration:[citation needed]
CoX2 + 2 KOH → Co(OH)2 + 2 KX
Co(OH)2 → CoO + H2O
Reactionsedit
As can be expected, cobalt(II) oxide reacts with mineral acids to form the corresponding cobalt salts:[citation needed]
CoO + 2 HX → CoX2 + H2O
Applicationsedit
Cobalt(II) oxide has for centuries been used as a coloring agent on kiln fired pottery. The additive provides a deep shade of blue named cobalt blue. The band gap (CoO) is around 2.4 eV.[citation needed] It also is used in cobalt blue glass.
^Kannan, R.; Seehra, Mohindar S. (1987). "Percolation effects and magnetic properties of the randomly diluted fcc system CopMg1-pO". Physical Review B. 35 (13): 6847–6853. Bibcode:1987PhRvB..35.6847K. doi:10.1103/PhysRevB.35.6847. PMID 9940938.
^Silinsky, P. S.; Seehra, Mohindar S. (1981). "Principal magnetic susceptibilities and uniaxial stress experiments in CoO". Physical Review B. 24 (1): 419–423. Bibcode:1981PhRvB..24..419S. doi:10.1103/PhysRevB.24.419.
^US 4389339, James, Leonard E.; Crescentini, Lamberto & Fisher, William B., "Process for making a cobalt oxide catalyst", published 1983-06-21
February 26, 2024
cobalt, oxide, redirects, here, other, uses, disambiguation, inorganic, compound, that, been, described, olive, green, gray, solid, used, extensively, ceramics, industry, additive, create, blue, colored, glazes, enamels, well, chemical, industry, producing, co. CoO redirects here For other uses see COO disambiguation Cobalt II oxide is an inorganic compound that has been described as an olive green 3 or gray 4 solid It is used extensively in the ceramics industry as an additive to create blue colored glazes and enamels as well as in the chemical industry for producing cobalt II salts A related material is cobalt II III oxide a black solid with the formula Co3O4 Cobalt II oxide NamesIUPAC name Cobalt II oxideOther names Cobaltous oxideCobalt monoxideIdentifiersCAS Number 1307 96 6 Y3D model JSmol Interactive imageInteractive imageChemSpider 8117730 YECHA InfoCard 100 013 777EC Number 215 154 6PubChem CID 9942118RTECS number GG2800000UNII V9X9644V7Q YUN number 3288CompTox Dashboard EPA DTXSID6051649InChI InChI 1S Co O q 2 2 YKey IUYLTEAJCNAMJK UHFFFAOYSA N YInChI 1 Co O rCoO c1 2Key IVMYJDGYRUAWML NNYFCMOLAOInChI 1 Co O q 2 2Key IUYLTEAJCNAMJK UHFFFAOYAYSMILES Co O Co 2 O 2 PropertiesChemical formula CoOMolar mass 74 9326 g molAppearance olive or gray powderOdor odorlessDensity 6 45 g cm3 1 Melting point 1 933 C 3 511 F 2 206 K Solubility in water insoluble in water 2 Magnetic susceptibility x 4900 0 10 6 cm3 molStructureCrystal structure cubic cF8Space group Fm3m No 225HazardsGHS labelling PictogramsSignal word WarningHazard statements H302 H317 H410Precautionary statements P260 P280 P284 P301 P310 P330 P304 P340 P310 P342 P311 P403 P233NFPA 704 fire diamond 300Flash point Non flammableLethal dose or concentration LD LC LD50 median dose 202 mg kgSafety data sheet SDS ICSC 1551Related compoundsOther anions Cobalt II sulfideCobalt II hydroxideOther cations Iron II oxideNickel II oxideRelated compounds Cobalt II III oxideCobalt III oxideExcept where otherwise noted data are given for materials in their standard state at 25 C 77 F 100 kPa Y verify what is Y N Infobox references Contents 1 Structure and properties 2 Preparation 3 Reactions 4 Applications 5 See also 6 ReferencesStructure and properties editCoO crystals adopt the periclase rock salt structure with a lattice constant of 4 2615 A 5 It is antiferromagnetic below 16 C 6 Preparation editCobalt II oxide is prepared by oxidation of cobalt powder with air or by thermal decomposition of cobalt II nitrate or the carbonate 3 4 Cobalt II III oxide decomposes to cobalt II oxide at 950 C 7 2 Co3O4 6 CoO O2It may also be prepared by precipitating the hydroxide followed by thermal dehydration citation needed CoX2 2 KOH Co OH 2 2 KX Co OH 2 CoO H2OReactions editAs can be expected cobalt II oxide reacts with mineral acids to form the corresponding cobalt salts citation needed CoO 2 HX CoX2 H2OApplications editCobalt II oxide has for centuries been used as a coloring agent on kiln fired pottery The additive provides a deep shade of blue named cobalt blue The band gap CoO is around 2 4 eV citation needed It also is used in cobalt blue glass See also editCobalt oxide nanoparticles Cobalt Cobalt II III oxideReferences edit Lide David R ed 2006 CRC Handbook of Chemistry and Physics 87th ed Boca Raton FL CRC Press ISBN 0 8493 0487 3 Advanced Search Alfa Aesar A Johnson Matthey Company Archived 2011 07 19 at the Wayback Machine Alfa com Retrieved on 2011 11 19 a b Greenwood Norman N Earnshaw Alan 1997 Chemistry of the Elements 2nd ed Butterworth Heinemann ISBN 978 0 08 037941 8 a b Donaldson John Dallas Beyersmann Detmar 2005 Cobalt and Cobalt Compounds Ullmann s Encyclopedia of Industrial Chemistry Weinheim Wiley VCH doi 10 1002 14356007 a07 281 pub2 ISBN 978 3527306732 Kannan R Seehra Mohindar S 1987 Percolation effects and magnetic properties of the randomly diluted fcc system CopMg1 pO Physical Review B 35 13 6847 6853 Bibcode 1987PhRvB 35 6847K doi 10 1103 PhysRevB 35 6847 PMID 9940938 Silinsky P S Seehra Mohindar S 1981 Principal magnetic susceptibilities and uniaxial stress experiments in CoO Physical Review B 24 1 419 423 Bibcode 1981PhRvB 24 419S doi 10 1103 PhysRevB 24 419 US 4389339 James Leonard E Crescentini Lamberto amp Fisher William B Process for making a cobalt oxide catalyst published 1983 06 21 Retrieved from https en wikipedia org w index php title Cobalt II oxide amp oldid 1158031401, wikipedia, wiki, book, books, library,
