Cobalt oxide

Cobalt oxide Basic information
Cobalt oxides Uses Preparation Toxicity
Product Name:Cobalt oxide
Synonyms:C.I. 77322;C.I. Pigment black 13;c.i.77322;c.i.pigmentblack13;ci77322;cipigmentblack13;Cobalt monooxide;Cobalt oxide (CoO)
CAS:1307-96-6
MF:CoO
MW:74.93
EINECS:215-154-6
Product Categories:Inorganics;INORGANIC & ORGANIC CHEMICALS;Pharmaceutical intermediates;Raw material
Mol File:1307-96-6.mol
Cobalt oxide Structure
Cobalt oxide Chemical Properties
Melting point 1785 °C
density 6.45
vapor pressure 0Pa at 20℃
form Powder
color Green-brown
Specific Gravity6.45
Water Solubility insoluble
Sensitive Air Sensitive
Merck 14,2446
Exposure limitsACGIH: TWA 1 mg/m3
OSHA: TWA 15 mg/m3; TWA 5 mg/m3
Stability:Stability Stable, but may be moisture sensitive.
InChIInChI=1S/Co.O
InChIKeyIVMYJDGYRUAWML-UHFFFAOYSA-N
SMILESO=[Co]
CAS DataBase Reference1307-96-6(CAS DataBase Reference)
NIST Chemistry ReferenceCobalt monoxide(1307-96-6)
EPA Substance Registry SystemCobalt(II) oxide (1307-96-6)
Safety Information
Hazard Codes Xn,N,T+
Risk Statements 22-43-50/53-42/43-26
Safety Statements 24-37-60-61-45-36/37-28
RIDADR UN 3288 6.1/PG 3
WGK Germany 3
RTECS GG2800000
TSCA Yes
HazardClass 6.1(b)
PackingGroup III
HS Code 28220000
Hazardous Substances Data1307-96-6(Hazardous Substances Data)
ToxicityLD50 orally in rats: 1.70 g/kg (Smyth)
MSDS Information
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Cobalt oxide English
ACROS English
SigmaAldrich English
ALFA English
Cobalt oxide Usage And Synthesis
Cobalt oxidesCobalt oxides have three oxidation states, namely: (i) cobaltous oxide (cobalt monoxide or cobalt [II] oxide) with CoO chemical formula, (ii) cobaltic oxide (cobalt [III] oxide) with Co2O3 chemical formula and (iii) cobaltosic oxide (cobalt [II, III] oxide) with Co3O4 chemical formula, which is an antiferromagnetic material. The first and the last oxidation states have a cubic crystal structure.
Cobalt oxide is used in pigments for ceramics, in glass coloring and decolorization, as oxidation catalyst for drying oils, and fast-drying paints and varnishes, in preparation of cobalt-metal catalysts, and cobalt powder for binder in sintered tungsten carbide; in semiconductors.
UsesCobalt(II) oxide is used as a pigment for ceramics and paints; for drying paints, varnishes and oils; for coloring glass; as a catalyst; and for preparation of other cobalt salts. The commercial product is a mixture of cobalt oxides.
PreparationCobalt(II) oxide is prepared by heating cobalt(II) carbonate, CoCO3, cobalt(III) oxide, Co2O3 or tricobalt tetroxide, Co3O4, at high temperatures in a neutral or slightly reducing atmosphere:
CoCO3 → CoO + CO2
ToxicityCobalt(II) oxide is moderately toxic by ingestion and subcutaneous and intratracheal routes.
LD50 oral (rat): 202 mg/kg
DescriptionThis is obtained as an olive-green powder by heating the metal in air or steam or by thermal decomposition of the hydroxide, carbonate or nitrate. It has the sodium chloride lattice and is antiferromagnetic below 292°K. When heated in oxygen above 400° the black oxide Co3O4 is obtained. This oxide is isomorphous with magnetite Fe3O4, and has tetrahedrally surrounded cobalt(II) ions and octahedrally surrounded cobalt(III) ions. Both these oxides are readily reduced to the metal by heating in hydrogen or with carbon. The reactions of CoO with silica, alumina and zinc oxide are used to form pigments in the ceramic industry.
Chemical PropertiesCobalt oxide is a high-valent oxide of cobalt, with a theoretical cobalt content of 71.06% and an oxygen content of 28.94%, which is a black amorphous powder. Cobalt oxide is a kind of unstable and impossible free state compound, usually refers to the cobalt oxide are attached with a certain amount of cobalt tetraoxide when heated cobalt oxide is reduced to cobalt tetraoxide. The theoretical cobalt content of cobalt tetraoxide is 73.43% and the oxygen content is 26.57%, with the appearance of gray-black or black powder.
Cobalt oxide
The cobalt oxide used in batteries is cobalt tetraoxide, which has a spinel structure. It can be used as anode material for lithium-ion batteries and is also the main raw material for the preparation of lithium cobaltate, the cathode material for lithium-ion batteries.
Physical propertiesThe commercial product is usually dark grey powder, but the color may vary from olive geeen to brown depending on particle size; density 6.44 g/cm3, which also may vary between 5.7 to 6.7 g/cm3, depending on the method of preparation; melts around 1,830°C; insoluble in water; soluble in acids and alkalis.
UsesIn pigments for ceramics; glass coloring and decolorization; oxidation catalyst for drying oils, fast-drying paints and varnishes; preparation of cobalt-metal catalysts, Co powder for binder in sintered tungsten carbide; in semiconductors.
UsesCobalt oxide, typically 3.4-4.5%, Molybdenum oxide typically 11.5-14.5% on alumina is used in the preparation of biofuel production by using algae.
Flammability and ExplosibilityNotclassified
COBALT OXIDE, GRAY,BLACK COBALT OXIDE,Cobalt(Ⅲ)oxide COBALT(II)CITRATE HYDRATE EDTA, DISODIUM COBALTOUS SALT cobalt hydroxide oxide COBALT CITRATE COBALT OXIDE, BLACK COBALT VERSALATE COBALT URANYL ACETATE COBALT OXIDE REAGENT,Cobalt oxide (II,III),Cobalt Oxide (Cobaltous Oxide),Cobalt oxide (Co3O4),cobalt oxide (tetroxide) COBALT GLUCONATE Cobalt(II) oxide/Aluminum oxide,(1:x) salt ETHYLENEDIAMINETETRAACETIC ACID DISODIUM COBALT SALT HYDRATE NICKEL COBALT OXIDE, NANOPOWDER, 99%,NICKEL COBALT OXIDE LITHIUM COBALT OXIDE Cobalt(II) citrate dihydrate, 98% COBALT OXIDE MOLYBDENUM OXIDE COBALT POTASSIUM OXALATE COBALT/BARIUM/ZINC OCTOATE BLENDS

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