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12902

Sigma-Aldrich

Potassium hexacyanocobaltate(III)

≥97.0%

Synonym(s):

Tripotassium hexacyanocobaltate(III)

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About This Item

Linear Formula:
K3Co(CN)6
CAS Number:
13963-58-1
Molecular Weight:
332.33
EC Number:
237-742-1
MDL number:
MFCD00011391
UNSPSC Code:
12352202
PubChem Substance ID:
329749935
NACRES:
NA.55

Assay

≥97.0%

form

crystalline

reaction suitability

reagent type: catalyst
core: cobalt

impurities

≤0.1% free cyanide

density

1.878 g/mL at 25 °C (lit.)

anion traces

sulfate (SO42-): ≤500 mg/kg

cation traces

Fe: ≤50 mg/kg

suitability

suitable for acidity or alkalinity (alkalinity <= 0.15 meq/g)

SMILES string

[K+].[K+].[K+].N#C[Co-3](C#N)(C#N)(C#N)(C#N)C#N

InChI

1S/6CN.Co.3K/c6*1-2;;;;/q;;;;;;-3;3*+1

InChI key

VSUFNKULKBVQQW-UHFFFAOYSA-N

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Application

Potassiumhexacyanocobaltate(III) can be used as a complexing agent to synthesize double metal cyanide catalyst:
  • For the chemoselective reductive amination of carbonyl compounds with aromatic amines to synthesize substituted amines in the presence of polymethylhydrosiloxane as a reducing agent.
  • In the ring opening polymerization of propylene oxide to synthesize polyols.
  • In the coupling reaction of CO2 with hydrous epoxides to synthesize cyclic carbonates.

Storage Class Code

13 - Non Combustible Solids

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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Effect of pH on Retention of 134Cs and 60Co from MAW by Potassium Hexacyanocobaltate(III).
Mekhail FM, et al.
Isotopes in Environmental and Health Studies, 130-133 (1991)
Samir Fernando Castilla-Acevedo et al.
Journal of hazardous materials, 392, 122389-122389 (2020-03-17)
The ultraviolet light activation of persulfate (PS) was evaluated for the degradation of cobalt cyanocomplexes, which are considered as some of the most recalcitrant compounds present in mining wastewater. The influence of the solution pH (11 and 13), initial concentration
A 59Co NMR relaxation probe of macromolecule anionic binding sites.
T Raj et al.
Analytical biochemistry, 106(2), 373-376 (1980-08-01)
Edward E Little et al.
Environmental science and pollution research international, 14(5), 333-337 (2007-08-29)
Cobalt cyanide complexes often result when ore is treated with cyanide solutions to extract gold and other metals. These have recently been discovered in low but significant concentrations in effluents from gold leach operations. This study was conducted to determine
The reduction of iodopentamminecobalt (III) iodide and potassium hexacyanocobaltate (III) with potassium in liquid ammonia.
Watt GW and Thompson RJ.
J. Inorg. Nucl. Chem., 9(3), 311-314 (1959)
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