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230375

Sigma-Aldrich

Cobalt(II) nitrate hexahydrate

reagent grade, 98%

Synonym(s):

Cobaltous nitrate, Cobaltous nitrate hexahydrate, Nitric acid, cobalt(II) salt

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About This Item

Linear Formula:
Co(NO3)2 · 6H2O
CAS Number:
10026-22-9
Molecular Weight:
291.03
MDL number:
MFCD00149647
UNSPSC Code:
12352302
PubChem Substance ID:
329752369
NACRES:
NA.55

grade

reagent grade

Quality Level

100

Assay

98%

form

flakes
powder, crystals or chunks

reaction suitability

reagent type: catalyst
core: cobalt

pH

4 (20 °C, 100 g/L)

mp

55 °C (lit.)

SMILES string

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

InChI

1S/Co.2NO3.6H2O/c;2*2-1(3)4;;;;;;/h;;;6*1H2/q+2;2*-1;;;;;;

InChI key

QGUAJWGNOXCYJF-UHFFFAOYSA-N

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General description

Cobalt (II) nitrate hexahydrate is a simple, inexpensive and readily available cobalt precursor to develop cobalt-based catalyst for specific organic reactions.

Application

Cobalt (II) nitrate hexahydrate is used as a catalyst:
  • In the synthesis of 5-carboxanilide-dihydropyrimidinone derivatives from acetoacetanilide, aldehyde, and urea/thiourea by condensation reaction.
  • In the multi-component synthesis of 2-amino-3- cyanopyridine and pyranopyrazole derivatives.
  • Cobalt (II) nitrate hexahydrate can also be used:,In the preparation of nano-Co3O4 by direct thermal decomposition, that are used in electrochemical water splitting and electrochemical sensors.

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B Inhalation - Eye Dam. 1 - Muta. 2 - Ox. Sol. 2 - Repr. 1B - Resp. Sens. 1 - Skin Sens. 1 - STOT RE 2 Inhalation

Target Organs

Lungs

Storage Class Code

5.1B - Oxidizing hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Some Phosphine Oxide and Arsine Oxide Complexes of Cobalt (II) Nitrate.
Cotton FA, et al.
Inorganic Chemistry, 2(6), 1162-1165 (1963)
Horacio López-Sandoval et al.
Journal of inorganic biochemistry, 102(5-6), 1267-1276 (2008-02-29)
In this work we present the synthesis, structural and spectroscopic characterisation of a series of cobalt(II) and zinc(II) coordination compounds with benzimidazole (bz) and its 2-benzimidazole derivatives: 2-aminobenzimidazole (2ab), albendazole (abz) and tris(2-benzimidazolylmethyl)amine (ntb). The compounds were evaluated for their
Thermal decomposition of cobalt nitrato compounds: Preparation of anhydrous cobalt (II) nitrate and its characterisation by Infrared and Raman spectra.
Ehrhardt C, et al.
Thermochimica Acta, 432(1), 36-40 (2005)
J M Llobet et al.
Revista espanola de fisiologia, 39(3), 291-298 (1983-09-01)
The acute toxicities of chloride, acetate, cobalt nitrate and cobalt sulphate (II) were investigated in rats. The values obtained for the LD50 (7 days) were 133, 194, 198 and 279 mg of Co/kg respectively, when the salts were given orally.
William Buchmann et al.
Journal of mass spectrometry : JMS, 42(4), 517-526 (2007-02-27)
The electronebulization of a cobalt(II)/cysteine(Cys) mixture in water/methanol (50/50) produced mainly cobalt-cationized species. Three main groups of the Co-cationized species can be distinguished in the ESI-MS spectrum: (1) the cobalt complexes including the cysteine amino acid only (they can be
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