Potassium ferricyanide

CAS Number
13746-66-2
EC Number
237-323-3

What is Potassium ferricyanide?

Potassium ferricyanide (CAS 13746-66-2), also known commercially as red prussiate, is an oxidizing salt used in industrial processes requiring controlled redox reactions.

Where is Potassium ferricyanide used?

  • Metal finishing and etching: controlled oxidizing agent for blueprint development and photographic toning
  • Textile and leather processing: discharge printing and bleaching to selectively remove color from dyed substrates
  • Mining and hydrometallurgy: leaching or selective precipitation agent during precious metal recovery
  • Pharmaceutical and analytical laboratories rely on it as a reagent for colorimetric assays and as an oxidant in the synthesis of active intermediates.

Commercial specifications

  • Technical grade for large-scale industrial use
  • High-purity reagent and ACS grades for laboratory and pharmaceutical procurement
  • Bulk supply in 25 kg bags or fiber drums; smaller packaging for laboratory and specialty buyers

Other Names (Synonyms)

tripotassium hexacyanoferrate|red prussiate|K3[Fe(CN)6]|potassium hexacyanoferrate(3-)|Potassium ferricyanate|Potassium cyanoferrate|Iron potassium cyanide|Tripotassium ferriccyanide

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What are the physical properties of Potassium ferricyanide?

Melting Point °Cd ec.)
Density 1.822 g/cm³
Appearance orange to red crystals
Color Orange to red
Odor Odorless
Form fine crystals
Water Solubility 464 g/L (20 ºC)
Vapor Pressure 0Pa at 20℃
pH 6-9 (25℃, 1M in H2O)

How is Potassium ferricyanide classified and handled safely? Learn More

Warning
GHS07· Irritant GHS08· Health Hazard GHS09· Environmental Hazard

Hazard Statements

H302 Harmful if swallowed
H315 Causes skin irritation
H319 Causes serious eye irritation
H335 May cause respiratory irritation
H361 Suspected of damaging fertility or the unborn child
H411 Toxic to aquatic life with long lasting effects

Precautionary Statements

P203 Obtain, consult and follow expert instructions for use.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.

Which trade and regulatory codes apply to Potassium ferricyanide?

HS Code 28372000
UN Number 3077
ADR Class 9
Packing Group III
WGK (Germany) 2
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