31253

Sigma-Aldrich

Potassium hexacyanoferrate(III)

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99%

Synonym(s):
Red prussiate, Potassium ferricyanide
Linear Formula:
K3Fe(CN)6
CAS Number:
Molecular Weight:
329.24
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NB.24

Quality Level

grade

ACS reagent
puriss. p.a.

Agency/Method

USP/NF
reag. ISO
reag. Ph. Eur.

assay

≥99%

form

crystalline

application(s)

titration: suitable

impurities

≤0.02% hexacyanoferrate(II) ([Fe(CN)6]4-)

pH

6-9 (25 °C, 329 g/L)

anion traces

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

cation traces

Ca: ≤5 mg/kg
Cd: ≤5 mg/kg
Co: ≤50 mg/kg
Cu: ≤10 mg/kg
Na: ≤200 mg/kg
Ni: ≤10 mg/kg
Pb: ≤20 mg/kg
Zn: ≤5 mg/kg

SMILES string

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

InChI

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

InChI key

MIMJFNVDBPUTPB-UHFFFAOYSA-N

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General description

Potassium hexacyanoferrate(III) (Potassium ferricyanide) is an alkali hexacyanoferrate. On heating, it undergoes decomposition to afford yellow-brown hexacyanoiron(III) acid. It can be prepared by the anodic oxidation of K4[Fe(CN)6].

Application

Potassium hexacyanoferrate(III) may be employed as an oxidizing agent during the fabrication of glucose conductometric biosensor.

Packaging

250, 500 g in poly bottle
1, 6×1 kg in poly bottle

Pictograms

Exclamation markEnvironment

Signal Word

Warning

Hazard Statements

hazcat

Aquatic Chronic 2 - Eye Irrit. 2

Supp Hazards

EUH032

storage_class_code

13 - Non Combustible Solids

WGK Germany

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

Glucose conductometric biosensor with potassium hexacyanoferrate (III) as an oxidizing agent.
Dzyadevich SV, et al.
Analytica Chimica Acta, 374(1), 11-18 (1998)
Eagleson M.
Concise Encyclopedia Chemistry, 291-291 (1994)
Alemnew Geto et al.
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