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Potassium ferricyanide

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Identification
Molecular formula
K4[Fe(CN)6]
CAS number
13746-66-2
IUPAC name
tetrapotassium;iron;hexacyanide
State
State

At room temperature, potassium ferricyanide is in a solid state, typically found in the form of crystalline powder.

Melting point (Celsius)
70.00
Melting point (Kelvin)
343.00
Boiling point (Celsius)
400.00
Boiling point (Kelvin)
673.00
General information
Molecular weight
329.25g/mol
Molar mass
329.2500g/mol
Density
1.8900g/cm3
Appearence

Potassium ferricyanide appears as bright red crystals that are highly soluble in water, resulting in a deep red solution. The compound is utilized for its vivid color in various applications.

Comment on solubility

Solubility of Tetrapotassium Hexacyanoferrate (II)

Tetrapotassium hexacyanoferrate (II), often referred to as potassium ferrocyanide, has notable solubility characteristics that are of interest in various applications. Understanding the solubility of this compound can be summarized as follows:

  • Soluble in Water: Tetrapotassium hexacyanoferrate (II) is highly soluble in water. When dissolved, it forms a clear, yellow solution.
  • Temperature Dependency: The solubility tends to increase with temperature, which is a common trait of many salts.
  • Reduced Solubility in Organic Solvents: The compound is generally insoluble in organic solvents, which limits its use in non-aqueous systems.
  • pH Sensitivity: The solubility may slightly vary with changes in pH, emphasizing the importance of controlling the chemical environment during reactions.
  • Potential Interactions: Tetrapotassium hexacyanoferrate (II) can complex with various metal ions, which may influence its solubility in mixed solutions.

In conclusion, the solubility of tetrapotassium hexacyanoferrate (II) is significantly influenced by aqueous conditions and plays a critical role in its functionality in chemical applications. As stated, "like dissolves like", and this compound exemplifies that principle within the realm of solubility.

Interesting facts

Interesting Facts about Tetrapotassium Iron Hexacyanide

Tetrapotassium iron hexacyanide, commonly known as potassium ferricyanide, is a fascinating compound with a rich history and various applications in both chemistry and industry. Here are some intriguing aspects of this compound:

  • Historical Significance: Discovered in the early 19th century, potassium ferricyanide has played a pivotal role in the development of analytical chemistry, particularly in the determination of iron content in samples.
  • Unique Properties: This compound exhibits striking color-changing behavior; it transitions from yellow to a deep red color when oxidized. This property is not just visually appealing but also useful in various chemical reactions.
  • Application in Photography: In the past, potassium ferricyanide was famously used in the development of photographs. It was an essential component in the blueprint process, which created blueprints for architectural plans.
  • Biochemical Relevance: In biology, potassium ferricyanide has been used in research as a redox indicator. Its ability to undergo oxidation-reduction reactions makes it valuable in studying biological processes.
  • Safety Considerations: While it is a widely used compound, it is crucial to note that potassium ferricyanide should be handled with care. It can release toxic hydrogen cyanide gas upon decomposition, so proper safety protocols should always be followed.

Overall, tetrapotassium iron hexacyanide is a compound that not only embodies unique chemical properties but also holds a significant place in the annals of scientific development. Its applications extend from industrial uses to historical techniques, making it a compound worth studying.