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P3289

Sigma-Aldrich

Potassium hexacyanoferrate(II) trihydrate

ACS reagent, 98.5-102.0%

Synonym(s):
Potassium ferrocyanide, Yellow prussiate
Linear Formula:
K4Fe(CN)6 · 3H2O
CAS Number:
Molecular Weight:
422.39
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent

Quality Level

assay

98.5-102.0%

form

powder

reaction suitability

reagent type: catalyst
core: iron

impurities

≤0.005% Insoluble matter

pH

8-10 (25 °C, 211 g/L)

mp

70 °C (lit.)

anion traces

chloride (Cl-): ≤0.01%
sulfate (SO42-): passes test (limit about 0.01%)

SMILES string

O.O.O.[K+].[K+].[K+].[K+].N#C[Fe-4](C#N)(C#N)(C#N)(C#N)C#N

InChI

1S/6CN.Fe.4K.3H2O/c6*1-2;;;;;;;;/h;;;;;;;;;;;3*1H2/q;;;;;;-4;4*+1;;;

InChI key

NRYOVBQTVIWDNU-UHFFFAOYSA-N

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General description

Potassium hexacyanoferrate(II) trihydrate, commonly known as potassium ferrocyanide, is a commonly used anticaking agent. Its cytotoxic and genotoxic effect has been evaluated. The growth of chemical garden in aqueous potassium hexacyanoferrate solution droplets on a superhydrophobic surface has been reported. The inhibition efficiency of potassium ferrocyanide in phosphoric acid solution against the corrosion of mild steel has been investigated.

Application

Potassium hexacyanoferrate(II) trihydrate may be used in the following processes:
  • Preparation of Carrez I solution.
  • Milk sample preparation for gold nanoparticles (AuNPs) based colorimetric detection of melamine.
  • Preparation of ferrocyanide/ferricyanide reaction, a redox pair solution for electrochemical testing.

Packaging

5, 100, 500 g in poly bottle

Hazard Statements

Precautionary Statements

Hazard Classifications

Aquatic Chronic 3

Supplementary Hazards

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

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Certificate of Origin

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