Tricobalt tetraoxide

Tricobalt tetraoxide Basic information
Description Preparation Reactions Sources
Product Name:Tricobalt tetraoxide
Synonyms:Co3-O4;Cobalt oxide (Co3O4);Cobalticcobaltousoxide;cobaltic-cobaltousoxide;cobalto-cobaltictetroxide;COBALTOXIDE,BLACK,POWDER,TECHNICAL;Tricobalttetraoxid;COBALT(II,III)OXIDE: 99.8%, POWDER
CAS:1308-06-1
MF:Co3O4-2
MW:240.8
EINECS:215-157-2
Product Categories:metal oxide;supported metal oxide, catalyst;27: Co;CobaltMaterials Science;Metal and Ceramic Science;Cobalt;Inorganics;Nanomaterials;Nanoparticles: Oxides, Nitrides, and Other CeramicsNanomaterials;Nanopowders and Nanoparticle Dispersions;Oxides
Mol File:1308-06-1.mol
Tricobalt tetraoxide Structure
Tricobalt tetraoxide Chemical Properties
Melting point 895 °C (dec.)(lit.)
Boiling point 3800°C
density 6.11 g/mL at 25 °C(lit.)
vapor pressure 0Pa at 20℃
form powder
color Dark Gray
Specific Gravity6.11
Water Solubility Soluble in acids and alkalis. Insoluble in water.
Merck 14,2429
Exposure limitsACGIH: TWA 0.02 mg/m3
InChIInChI=1S/3Co.4O
InChIKeyLBFUKZWYPLNNJC-UHFFFAOYSA-N
SMILESO([Co]=O)[Co]=O.O=[Co]
CAS DataBase Reference1308-06-1(CAS DataBase Reference)
NIST Chemistry ReferenceCobalt oxide(1308-06-1)
EPA Substance Registry SystemCobalt tetraoxide (1308-06-1)
Safety Information
Hazard Codes Xn,T,Xi
Risk Statements 36/37/38-40-43-49-50/53-42-52/53
Safety Statements 26-36/37/39-45-36/37-53-61-22
RIDADR 1477
WGK Germany 1
RTECS GG2500000
TSCA Yes
HazardClass 9
HS Code 28220000
MSDS Information
ProviderLanguage
Cobalt (+2) cobaltic (+3) oxide English
Tricobalt tetraoxide Usage And Synthesis
DescriptionCobalt Oxide (II, III) is a kind oxide of cobalt. It has applications in enamels, semiconductors, grinding wheels. As an important inorganic material, it can be used in catalysis, superconductors, ceramics and other fields. It can also be used as catalyst and catalyst carrier, as electrode active material, for glass, porcelain colorants and pigments, as chemical industry oxidant and as a catalyst for organic synthesis, in senior goggles and other filter materials, in temperature and gas sensors, in electronic ceramics, in lithium ion battery electrode materials, magnetic materials, electrochromic devices, enamels, solar energy absorbers. Cobalt oxide nanoparticles can readily enter cells, and have the potential to be used for hyperthermic treatment, gene therapy and drug delivery. It is more commonly applied for energy storage such as Lithium-ion battery. It may also be used as a gas sensor in sensing toluene, acetone and some other toxic vapors.
PreparationTricobalt tetroxide is obtained when cobalt(II) carbonate, cobalt(II) or cobalt(III) oxide, or cobalt hydroxide oxide, CoO(OH) is heated in air at temperatures above 265°C. The temperature must not exceed 800°C (see decomposition temperature above).
ReactionsHeating above 900°C expels oxygen out of the molecule forming cobalt(II) oxide:
2Co3O4 6CoO + O2
Tricobalt tetroxide absorbs oxygen at lower temperatures, but there is no change in the crystal structure.)
The oxide is reduced to its metal by hydrogen, carbon or carbon monoxide.
Co3O4 + 4H2 3Co + 4H2O
Co3O4 + 4CO 3Co + 4CO2




Sourceshttps://en.wikipedia.org/wiki/Cobalt(II,III)_oxide
https://www.alfa.com/zh-cn/catalog/040184/
https://en.wikipedia.org/wiki/Cobalt_oxide_nanoparticle
https://pubchem.ncbi.nlm.nih.gov/compound/6432046#section=Top


Chemical PropertiesBlack fine powder
Physical propertiesBlack cubic crystal; density 6.11 g/cm3; decomposes above 900°C, losing oxygen; insoluble in water; soluble in acids and alkalis.
UsesIt is used in artificial photosynthesis. It is used as a magnetic semiconductor. It is also employed in supercapacitors and lithium-ion batteries.
UsesIn enamels; in semiconductors; in grinding wheels.
Flammability and ExplosibilityNotclassified
Tricobalt tetraoxide Preparation Products And Raw materials
Raw materialsSodium hydroxide-->Sulfuric acid-->Extractant
Zinc oxide 60CO cobaltic hydroxide ETHYLENE OXIDE (Diethoxymethyl)diphenylphosphine oxide Iron oxide COBALT(III) OXIDE BLACK NITRIC OXIDE Tricobalt tetraoxide Cobalt hydroxide COBALT BLUE NITROUS OXIDE Cobalt chloride Magnesium oxide Cobalt oxide Cobalt Cuprous oxide Propylene oxide Cobalt Oxide Nanoparticles Cobalt Tetroxide

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