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Cobalt Tetroxide

Cobalt Tetroxide structure

CAS No.: 1308-06-1

Chemical Name:: Cobalt Tetroxide

Synonyms: cobalt Tetroxide;Co3-O4;COBALT BLACK;Cobalt oxide (Co3O4);COBALT(III) OXIDE BLACK;Cobalt(II;C805291-25g;CobaltOxideGr;COBALTIC OXIDE;cobaltosicoxide

CBNumber:: CB00124507

Molecular Formula:: Co3O4-2

Molecular Weight:: 240.8

MDL Number:: MFCD00010939

MOL File:: 1308-06-1.mol

MSDS File:: SDS

Last updated:2025-07-16 09:55:30

Product description	Number	Pack Size	Price
Cobalt(II,III) oxide powder, <10 μm	221643	50g	$94
Cobalt(II,III) oxide ≥99.99% trace metals basis	203114	5g	$114
Cobalt oxide-molybdenum oxide on alumina (3.5% CoO, 14% MoO3)	27-0480	500g	$266
Cobalt oxide-molybdenum oxide on alumina (3.5% CoO, 14% MoO3)	27-0480	100g	$67
Cobalt(II,III) oxide nanopowder, <50 nm particle size (TEM), 99.5% trace metals basis	637025	25g	$89.4
More product size

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Cobalt Tetroxide Properties

Melting point

895 °C (dec.)(lit.)

Boiling point

3800°C

Density

6.11 g/mL at 25 °C(lit.)

bulk density

0.57g/mL

vapor pressure

0Pa at 20℃

storage temp.

Store at room temperature, keep dry and cool

solubility

insoluble in H2O; soluble in acid solutions, alkaline solutions

form

powder

color

Dark Gray

Specific Gravity

6.11

Water Solubility

Soluble in acids and alkalis. Insoluble in water.

Crystal Structure

Spinel type

crystal system

Cube

Merck

14,2429

Space group

Fd3m

Lattice constant

a/nm	b/nm	c/nm	α/o	β/o	γ/o	V/nm3
0.80835	0.80835	0.80835	90	90	90	0.5282

Exposure limits

ACGIH: TWA 0.02 mg/m3

InChI

InChI=1S/3Co.4O

InChIKey

LBFUKZWYPLNNJC-UHFFFAOYSA-N

SMILES

O([Co]=O)[Co]=O.O=[Co]

CAS DataBase Reference

1308-06-1(CAS DataBase Reference)

EWG's Food Scores

FDA UNII

USK772NS56

NIST Chemistry Reference

Cobalt oxide(1308-06-1)

EPA Substance Registry System

Cobalt tetraoxide (1308-06-1)

UNSPSC Code

12352303

NACRES

NA.23

SAFETY

Risk and Safety Statements

Symbol(GHS)

GHS08

Signal word

Danger

Hazard statements

H334-H350i-H412

Precautionary statements

P201-P273-P308+P313

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

RTECS

GG2500000

TSCA

Yes

HazardClass

HS Code

28220000

NFPA 704

	1
2		0

Cobalt Tetroxide price More Price(30)

Manufacturer	Product number	Product description	CAS number	Packaging	Price	Updated	Buy
Sigma-Aldrich	221643	Cobalt(II,III) oxide powder, <10 μm	1308-06-1	50g	$94	2025-07-31	Buy
Sigma-Aldrich	203114	Cobalt(II,III) oxide ≥99.99% trace metals basis	1308-06-1	5g	$114	2023-01-07	Buy
Strem Chemicals	27-0480	Cobalt oxide-molybdenum oxide on alumina (3.5% CoO, 14% MoO3)	1308-06-1	500g	$266	2021-12-16	Buy
Strem Chemicals	27-0480	Cobalt oxide-molybdenum oxide on alumina (3.5% CoO, 14% MoO3)	1308-06-1	100g	$67	2021-12-16	Buy
Sigma-Aldrich	637025	Cobalt(II,III) oxide nanopowder, <50 nm particle size (TEM), 99.5% trace metals basis	1308-06-1	25g	$89.4	2025-07-31	Buy

Product number	Packaging	Price	Buy
221643	50g	$94	Buy
203114	5g	$114	Buy
27-0480	500g	$266	Buy
27-0480	100g	$67	Buy
637025	25g	$89.4	Buy

Cobalt Tetroxide Chemical Properties,Uses,Production

Description

Cobalt 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.

Preparation

Tricobalt 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).

Reactions

Heating 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

Sources

https://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 Properties

Black fine powder

Physical properties

Black cubic crystal; density 6.11 g/cm³; decomposes above 900°C, losing oxygen; insoluble in water; soluble in acids and alkalis.

Uses

It is used in artificial photosynthesis. It is used as a magnetic semiconductor. It is also employed in supercapacitors and lithium-ion batteries.

Uses

In enamels; in semiconductors; in grinding wheels.

Flammability and Explosibility

Not classified

Cobalt Tetroxide Preparation Products And Raw materials

Raw materials

Extractant Sodium hydroxide Sulfuric acid

Preparation Products

Cobalt Tetroxide Suppliers

Global( 450)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
City Chemical LLC	2039322489	sales@citychemical.com	United States	168	58
henan kanbei chemical co.,ltd	+undefined-86-1523780-4566 +undefined15237804566	henankanbeichemical@163.com	China	511	58
Hebei Chuanghai Biotechnology Co., Ltd	+8615350571055	Sibel@chuanghaibio.com	China	8768	58
Shaanxi Dideu Medichem Co. Ltd	+86-29-81148696 +86-17392712697	1022@dideu.com	China	3994	58
Hebei Yanxi Chemical Co., Ltd.	+8618531123677	faithe@yan-xi.com	China	5853	58
Henan Tianfu Chemical Co.,Ltd.	+86-0371-55170693 +86-19937530512	info@tianfuchem.com	China	21612	55
career henan chemical co	+86-0371-86658258 +8613203830695	sales@coreychem.com	China	29847	58
Hubei Jusheng Technology Co.,Ltd.	18871490254	linda@hubeijusheng.com	CHINA	28172	58
Zhengzhou Alfa Chemical Co.,Ltd	+8618530059196	sale04@alfachem.cn	China	11784	58
SIMAGCHEM CORP	+86-5922680277 +86-13806087780	sale@simagchem.com	China	17346	58

Supplier	Advantage
City Chemical LLC	58
henan kanbei chemical co.,ltd	58
Hebei Chuanghai Biotechnology Co., Ltd	58
Shaanxi Dideu Medichem Co. Ltd	58
Hebei Yanxi Chemical Co., Ltd.	58
Henan Tianfu Chemical Co.,Ltd.	55
career henan chemical co	58
Hubei Jusheng Technology Co.,Ltd.	58
Zhengzhou Alfa Chemical Co.,Ltd	58
SIMAGCHEM CORP	58

View Lastest Price from Cobalt Tetroxide manufacturers

Image	Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
	2025-12-03	Lead tetroxide 1314-41-6	US $1.00 / KG	1KG	99%	10 mt	Hebei Chuanghai Biotechnology Co., Ltd
	2019-07-06	RUTHENIUM TETROXIDE 20427-56-9	US $1.00 / kg	1kg	95%-99%	100kg	Career Henan Chemical Co

Lead tetroxide
1314-41-6
US $1.00 / KG
99%
Hebei Chuanghai Biotechnology Co., Ltd

RUTHENIUM TETROXIDE
20427-56-9
US $1.00 / kg
95%-99%
Career Henan Chemical Co

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