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Iron(II) hexacyanoferrate(III)

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Identification
Molecular formula
KFeIII[FeII(CN)6]
CAS number
14038-43-8
IUPAC name
ferrous;hexacyanide
State
State

In its typical form, Iron(II) hexacyanoferrate(III) is a solid at room temperature, specifically in the form of a dark blue crystalline solid.

Melting point (Celsius)
280.00
Melting point (Kelvin)
553.15
Boiling point (Celsius)
0.00
Boiling point (Kelvin)
0.00
General information
Molecular weight
303.92g/mol
Molar mass
303.9230g/mol
Density
1.9800g/cm3
Appearence

Iron(II) hexacyanoferrate(III), often known as Prussian blue, appears as a dark blue pigment. It is characterized by its intense blue color, which makes it useful in paints, inks, and dyes. This compound is a solid and may appear as crystalline or finely powdered.

Comment on solubility

Solubility of Ferrous Hexacyanide

Ferrous hexacyanide, commonly known as Prussian blue, has interesting solubility characteristics that are important to consider. It is a complex inorganic compound with a formula of Fe(CN)6, and its solubility behavior is quite unique:

  • Water solubility: Ferrous hexacyanide is generally insoluble in water, which means it forms a precipitate rather than dissolving. This property is due to the stable crystalline structure that does not interact favorably with water molecules.
  • Solubility in organic solvents: It is also poorly soluble in organic solvents, further emphasizing its stability in various environments.
  • Influence of pH: Although insoluble in neutral water, the solubility can vary with pH levels. Under highly alkaline conditions, however, the solubility can increase slightly.
  • Application of solubility: The insolubility of ferrous hexacyanide is beneficial in various applications, including its use as a pigment and in pigment formulation for paints.

In summary, the solubility profile of ferrous hexacyanide is characterized by its insolubility in both water and organic solvents. This feature plays a critical role in its application across different fields, allowing it to be utilized safely and effectively.

Interesting facts

Interesting Facts about Ferrous Hexacyanide

Ferrous hexacyanide, commonly known as Prussian blue, is a compelling compound that has fascinated scientists for centuries. Here are some intriguing insights:

  • Historical Significance: Ferrous hexacyanide was first discovered in the early 18th century and is noted for being one of the first synthetic pigments, leading to its usage in art and printing. It has been a staple in artists' palettes for thousands of years.
  • Unique Color: The compound is renowned for its deep blue color, which results from the interaction of light with the iron ions and cyanide groups in the compound. This vibrant hue has earned it a prominent place in the history of painting.
  • Medical Applications: Beyond its artistic attributes, ferrous hexacyanide has found utility in medicine. It is used as an antidote for certain types of heavy metal poisoning, showcasing its relevance in health sciences.
  • Environmental Importance: This compound is also instrumental in environmental chemistry, acting as a passive means of capturing and immobilizing harmful substances like cesium and thallium, thereby reducing their bioavailability.
  • Cultural Impact: Prussian blue has influenced not just science but also culture, appearing in literature, poetry, and even music, symbolizing melancholy and depth.

In conclusion, ferrous hexacyanide transcends its identity as a mere chemical substance, intertwining itself within the tapestry of art, history, and science. As scientists and students delve deeper into its fascinating properties, they uncover the profound implications of this remarkable compound.

Synonyms
13408-63-4
iron(2+);hexacyanide
UNII-FLX0VIC39Y
[Fe(CN)6]4-
Q1963663
Ferrate(4-), hexakis(cyano-.kappa.C)-, (OC-6-11)-