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C6768

Sigma-Aldrich

Cobalt(II) sulfate heptahydrate

ReagentPlus®, ≥99%

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Synonym(s):
Cobaltous sulfate heptahydrate
Linear Formula:
CoSO4 · 7H2O
CAS Number:
10026-24-1
Molecular Weight:
281.10
EC Number:
233-334-2
MDL number:
MFCD00149657
UNSPSC Code:
12352300
PubChem Substance ID:
329775132
NACRES:
NA.55

Quality Level

200

product line

ReagentPlus®

Assay

≥99%

form

powder

pH

4 (20 °C, 100 g/L)

density

2.03 g/mL at 25 °C (lit.)

SMILES string

O.[Co++].[O-]S([O-])(=O)=O

InChI

1S/Co.H2O4S.H2O/c;1-5(2,3)4;/h;(H2,1,2,3,4);1H2/q+2;;/p-2

InChI key

BGORGFZEVHFAQU-UHFFFAOYSA-L

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General description

Cobalt(II) sulfate heptahydrate is an orange to very dark orange and dark red-orange and very dark red-brown crystalline structure that is soluble in water. It is synthesized commercially by dissolving cobalt metal in sulfuric acid. It is commonly used as a reagent in the synthesis of cobalt nanoparticles and to fabricate cobalt-nickel nanoparticles.

Application

Cobalt(II) sulfate heptahydrate can be used as a catalyst to synthesize:
  • Benzazoles from alcohols and o-substituted anilines.
  • β-Acetamido ketones via one-pot multi-component coupling reaction of aromatic aldehydes, acetophenones, and acetyl chlorides.
It can also be used as a reagent to synthesize cobalt arylphosphonate metal-organic framework.

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B Inhalation - Eye Irrit. 2 - Muta. 2 - Repr. 1B - Resp. Sens. 1 - Skin Sens. 1

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

危险化学品

Certificates of Analysis (COA)

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Synthesis of cobalt-nickel nanoparticles via a liquid-phase reduction process.
T U, et al.
Journal of Nanotechnology, 2021, 1-7 (2021)
Hydrogen generation from the hydrolysis of ammonia borane using cobalt-nickel-phosphorus (Co-Ni-P) catalyst supported on Pd-activated TiO2 by electroless deposition.
Rakap M, et al.
International Journal of Hydrogen Energy, 36(11), 254-261 (2011)
Chlorinated drinking water; chlorination byproducts; some other halogenated compounds; cobalt and cobalt compounds
International Agency for Research on Cancer and others
IARC Monographs on the Evaluation of Carcinogenic Risks to Humans / World Health Organization, International Agency for Research on Cancer, 52, 363-472 (1991)
Synthesis, Structural, Thermal and Magnetic Characterization of a Pyrophosphato-Bridged Cobalt (II) Complex.
Ikotun OF, et al.
European Journal of Inorganic Chemistry, 2008(17), 2691-2697 (2008)
High discordance in development and organ site distribution of tumors in rats and mice in NTP two-year inhalation studies.
Smith, Carr S J, et al.
Toxicology Research, 1, 2397847317714802-2397847317714802 (2017)
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