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Sigma-Aldrich

Cobalt(II) nitrate hexahydrate

puriss. p.a., ACS reagent, Ni ≤0.001%, ≥99.0% (KT)

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:
12352300
PubChem Substance ID:
329759242
NACRES:
NB.24

grade

ACS reagent
puriss. p.a.

assay

≥99.0% (KT)

form

powder or crystals

reaction suitability

reagent type: catalyst
core: cobalt

pH

4 (20 °C, 100 g/L)

mp

55 °C (lit.)

anion traces

chloride (Cl-): ≤10 mg/kg
sulfate (SO42-): ≤50 mg/kg

cation traces

Ca: ≤10 mg/kg
Cd: ≤10 mg/kg
Cr: ≤50 mg/kg
Cu: ≤10 mg/kg
Fe: ≤10 mg/kg
K: ≤100 mg/kg
Mg: ≤10 mg/kg
Mn: ≤20 mg/kg
NH4+: ≤500 mg/kg
Na: ≤100 mg/kg
Ni: ≤10 mg/kg
Pb: ≤10 mg/kg
Zn: ≤50 mg/kg

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 (Co(NO3)2·6H2O) is the hydrated cobalt salt. Its step-wise thermal degradation has been investigated. It affords anhydrous cobalt(II)nitrate as decomposition product.

Application

Cobalt(II) nitrate hexahydrate may be used in the preparation of the following complexes (bz = benzimidazole, abz = albendazole, ntb = tris(2-benzimidazolylmethyl)amine, 2ab = 2-aminobenzimidazole):
  • dinitratobis-(triphenylarsine oxide)-cobalt(II) complex
  • [Co(bz)2(NO3)2].0.5EtOH
  • [Co(abz)2(NO3)2].2.5H2O
  • [Co(ntb)NO3]NO3.H2O

signalword

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

5.1B - Oxidizing hazardous materials

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Certificates of Analysis (COA)

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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)
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)
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
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
Massimiliano Aschi et al.
Journal of mass spectrometry : JMS, 44(7), 1038-1046 (2009-04-01)
The nature of the ionic species, formed by electrospray ionization (ESI) of Co(NO3)2/CH3OH solutions with a pair of aminoalcohols W and Y, has been investigated by mass spectrometric and computational methods. Collision induced dissociation (CID) of ions, formally corresponding to
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