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C6768

Cobalt(II) sulfate heptahydrate

ReagentPlus®, ≥99%

Synonym(s):

Cobaltous sulfate heptahydrate

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Size/SKUAvailabilityPrice
100 g

Estimated to ship on27 July 2026fromSchnelldorf Distribution

546,00 PLN
250 g

Estimated to ship on09 September 2026fromSchnelldorf Distribution

1.200,00 PLN
1 kg

Estimated to ship on27 July 2026fromSchnelldorf Distribution

2.460,00 PLN
2.5 kg

Estimated to ship on27 July 2026fromSchnelldorf Distribution

3.520,00 PLN

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

546,00 PLN


Estimated to ship on27 July 2026Details


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Quality Segment

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

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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1 of 1

This Item
935751CDS0040101.02556
description

ReagentPlus®, ≥99%

description

≥99.99% trace metals basis

description

AldrichCPR

description

for analysis EMSURE®

form

powder

form

solid

form

crystals

form

solid

assay

≥99%

assay

≥99.99% trace metals basis

assay

-

assay

≥99% (CoSO4.7H2O basis, complexometric)

Quality Level

200

Quality Level

200

Quality Level

-

Quality Level

300

pH

4 (20 °C, 100 g/L)

pH

-

pH

-

pH

4 (20 °C, 100 g/L in H2O)

density

2.03 g/mL at 25 °C (lit.)

density

-

density

-

density

1.95 g/cm3 at 20 °C

product line

ReagentPlus®

product line

-

product line

-

product line

EMSURE®


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signalword

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


Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

10026-24-1

CAS No.

10026-24-1

CAS No.


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Certificates of Analysis (COA)

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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

      Helpful?

  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

      Helpful?

  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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