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C6768

Sigma-Aldrich

Cobalt(II) sulfate heptahydrate

ReagentPlus®, ≥99%

Synonym(s):

Cobaltous sulfate heptahydrate

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About This Item

Linear Formula:
CoSO4 · 7H2O
CAS Number:
10026-24-1
Molecular Weight:
281.10
EC Number:
233-334-2
MDL number:
MFCD00149657
UNSPSC Code:
12352302
PubChem Substance ID:
329775132
NACRES:
NA.55
Assay:
≥99%
form:
powder

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

Storage Class Code

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
SLCK9616
SLCJ2746
SLCF0571
SLBQ9230V
SLBQ9227V

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Nickel(II) sulfate hexahydrate ReagentPlus®, powder or crystals

Sigma-Aldrich

N4882

Nickel(II) sulfate hexahydrate

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)
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)
Woodhall Stopford et al.
Journal of environmental monitoring : JEM, 5(4), 675-680 (2003-09-02)
Testing of metal compounds for solubility in artificial fluids has been used for many years to assist determining human health risk from exposure to specific compounds of concern. In lieu of obtaining bioavailability data from samples of urine, blood, or
P J Duerksen-Hughes et al.
Environmental health perspectives, 107(10), 805-812 (1999-09-30)
In vivo carcinogenicity testing is an expensive and time-consuming process, and as a result, only a relatively small fraction of new and existing chemicals has been tested in this manner. Therefore, the development and validation of alternative approaches is desirable.
Ali M Elshafei et al.
Journal of basic microbiology, 45(5), 335-343 (2005-09-28)
Cell-free extracts of nitrate-grown Penicillium politans NRC-510 catalyzes the hydrolytic deamination of cytidine to uridine. Uridine was chromatographically identified in cell-free extracts. The enzyme exhibited optimum pH and temperature activities at 6.5 and 80 degrees C respectively. Thermal stability experiments
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