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C6768

Cobalt(II) sulfate heptahydrate

ReagentPlus®, ≥99%

Synonym(s):

Cobaltous sulfate heptahydrate

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100 g

Available to ship TODAYfromMILWAUKEE

$74.20
250 g

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$170.00
1 kg

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$493.00
2.5 kg

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$608.00

About This Item

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

$74.20


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Quality Level

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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This Item
C2911C8661229598
form

powder

form

powder

form

powder

form

crystals and lumps

assay

≥99%

assay

-

assay

-

assay

99.998% trace metals basis

Quality Level

200

Quality Level

200

Quality Level

300

Quality Level

100

pH

4 (20 °C, 100 g/L)

pH

-

pH

-

pH

-

density

2.03 g/mL at 25 °C (lit.)

density

-

density

-

density

2.03 g/mL at 25 °C (lit.)

product line

ReagentPlus®

product line

-

product line

BioReagent

product line

-

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

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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

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

flash_point_f

Not applicable

flash_point_c

Not applicable


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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)
Synthesis of cobalt-nickel nanoparticles via a liquid-phase reduction process.
T U, et al.
Journal of Nanotechnology, 2021, 1-7 (2021)
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)
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

Articles

Experts discuss challenges and production processes of nickel-rich layered oxide cathode materials in energy storage systems.

Global Trade Item Number

SKUGTIN
C6768-100G04061835278824
C6768-250G04061835278831
C6768-2.5KG04061832583945
C6768-1KG04061833511565

Questions

1–3 of 3 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  3. In a 99% pure sample, what would make up the 1% impurity?

    1 answer
    1. The impurities present in this product have not been identified. There may be other trace metals or insoluble salts; however, this cannot be confirmed.

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