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C1297

Sigma-Aldrich

Copper(II) sulfate

ReagentPlus®, ≥99%

Synonym(s):

Cupric sulfate

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About This Item

Linear Formula:
CuSO4
CAS Number:
Molecular Weight:
159.61
EC Number:
MDL number:
UNSPSC Code:
12352300
PubChem Substance ID:
NACRES:
NA.21

vapor pressure

7.3 mmHg ( 25 °C)

Quality Level

product line

ReagentPlus®

Assay

≥99%

form

powder

reaction suitability

reaction type: click chemistry

pH

3.5-4.5 (20 °C, 50 g/L)

mp

200 °C (dec.) (lit.)

density

3.603 g/mL at 25 °C (lit.)

storage temp.

room temp

SMILES string

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

InChI

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

InChI key

ARUVKPQLZAKDPS-UHFFFAOYSA-L

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General description

Copper(II)sulfate is a Lewis acid catalyst commonly used to promote acid-catalyzed organic transformations.

Application

Copper(II)sulfate can be used as a catalyst for the:
  • Alcoholysis of wheat straw into methyl levulinate.
  • Selective oxidation of amines to imines in the presence of hydrogen peroxide as an oxidant.
  • Synthesis of 1,2,3-triazoles via Click reactions of azides and alkynes.
  • Microwave-assisted Huisgen-type cycloaddition to synthesize modified poly(N-vinylpyrrolidone).

Legal Information

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

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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Journal of agricultural and food chemistry, 66(51), 13483-13491 (2018-12-13)
Diorganopolysulfanes can be generated when hydrogen sulfide (H2S) and thiols are oxidized in the presence of Cu(II) under conditions usually aimed at removing H2S from wine. This work sought to understand if polysulfanes could act as latent sources of H2S
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