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COBALT(III) OXIDE BLACK

CAS No.
1308-04-9
Chemical Name:
COBALT(III) OXIDE BLACK
Synonyms
COBALT BLACK;Cabalt trioxide;COBALT(II,III) OXIDE;c.i.77323;dicobaltoxide;cobaltperoxide;cobalttrioxide;Cobolt-3-oxide;Cobalt(Ⅲ)oxide;COBALTIC OXIDE
CBNumber:
CB4291419
Molecular Formula:
Co2O3
Molecular Weight:
165.86
MDL Number:
MFCD00036266
MOL File:
1308-04-9.mol
Last updated:2023-10-17 17:11:58

COBALT(III) OXIDE BLACK Properties

Melting point 895 °C (dec.)(lit.)
Density 6.11 g/mL at 25 °C(lit.)
storage temp. Inert atmosphere,Room Temperature
solubility insoluble in H2O; soluble in concentrated acid solutions
form powder
color gray-black
Water Solubility insoluble H2O; soluble conc acids [HAW93]
EPA Substance Registry System Cobalt oxide (Co2O3) (1308-04-9)

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictogramsGHS hazard pictograms
GHS08,GHS07
Signal word  Warning
Hazard statements  H351-H317-H410-H302
Precautionary statements  P201-P202-P281-P308+P313-P405-P501-P264-P270-P301+P312-P330-P501-P261-P272-P280-P302+P352-P333+P313-P321-P363-P501-P273-P391-P501
Hazard Codes  Xn
Risk Statements  36/37/38-40-43-22
Safety Statements  26-36/37/39-36/37
WGK Germany  1
RTECS  GG2500000
Toxicity mouse,LD50,subcutaneous,2064mg/kg (2064mg/kg),Zhurnal Vsesoyuznogo Khimicheskogo Obshchestva im. D.I. Mendeleeva. Journal of the D.I. Mendeleeva All-Union Chemical Society. Vol. 19, Pg. 186, 1974.

COBALT(III) OXIDE BLACK Chemical Properties,Uses,Production

Uses

COBALT(III) OXIDE BLACK is used as a pigment; for glazing porcelain and pottery; and for coloring enamels.

Preparation

COBALT(III) OXIDE BLACK is prepared by heating cobalt compounds at low temperatures in air.

Reactions

Heating 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

Description

Neither the oxide Co2O3 nor the hydroxide Co(OH)3 is definitely established. The oxidation of cobalt(II) hydroxide in aqueous suspension with, for example, peroxides, or the destruction of a cobalt(III) complex with alkali gives a brown or black powder Co2O3.aq which upon drying at 150° yields the monohydrate Co2O3.H2O; this is probably best formulated as CoO(OH). When heated further in attempts to dehydrate it, the "monohydrate" begins to evolve oxygen (as well as water) at 300° with the formation of black Co3O4. When heated to 100° in air cobalt(II) hydroxide is converted to dark brown CoO(OH).

Chemical Properties

Steel-gray or black powder.Soluble in concentrated acids; insoluble in water.

Physical properties

Grayish black powder; density 5.18 g/cm3; decomposes at 895°C; insoluble in water; soluble in concentrated mineral acids.

Uses

Pigment, coloring enamels, glazing pottery.

Uses

Cobaltic oxide (Co2O3) is also known as cobalt oxide or cobalt black. It is dark gray to black and is used in pigments, ceramic glazes, and semiconductors.

Preparation

Cobalt(III) oxide is prepared by heating cobalt compounds at low temperatures in air.

Definition

Sometimes 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.

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View Lastest Price from COBALT(III) OXIDE BLACK manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
COBALT(III) OXIDE BLACK pictures 2024-03-28 COBALT(III) OXIDE BLACK
1308-04-9
US $3.50 / kg 1kg 99% 300tons Hebei Dangtong Import and export Co LTD
COBALT(III) OXIDE BLACK pictures 2024-03-28 COBALT(III) OXIDE BLACK
1308-04-9
US $130.00 / ton 5ton 99% 3000tons Hebei Dangtong Import and export Co LTD
COBALT(III) OXIDE BLACK pictures 2023-09-06 COBALT(III) OXIDE BLACK
1308-04-9
US $0.00 / KG 1KG 99% 500000kg Hebei Guanlang Biotechnology Co., Ltd.

COBALT(III) OXIDE BLACK Spectrum

dicobalttrioxide COBALT(III) OXIDE R. G., FOR THE DETERMI NATION OF SULFUR COBALT(III) OXIDE BLACK, PURE Cobalt(Ⅱ,Ⅲ)oxide Cobaltic oxide monohydrate BLACKCOBALTICOXIDE cobalt(iii)oxide cobaltoxide(co2o3) cobaltperoxide cobaltsesqioxide cobalttrioxide dicobaltoxide COBALT(III) OXIDE BL Cobolt-3-oxide cobalitic oxide BLACK COBALT OXIDE COBALT SESQUIOXIDE COBALT OXIDE, GRAY COBALT TETRAOXIDE Cobalt(Ⅲ)oxide COBALT(+2,+3)OXIDE COBALT(2,3) OXIDE COBALTIC TETRAOXIDE COBALTIC OXIDE COBALT(II)-COBALT(III)-OXIDE COBALT(III) OXIDE BLACK c.i.77323 cobalt(3+)oxide Co2O3 COBALT(III) OXIDE TIANFU-CHEM 1308-04-9 COBALT(III) OXIDE BLACK COBALT BLACK Cabalt trioxide COBALT(II,III) OXIDE Titanium Dioxide (TiO2) Sputtering Targets 1308-04-9 Co2O3 Inorganics