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Properties of substance:

potassium ferrocyanide

Synonyms:

potassium hexacyanoferrate(II)

Group of substances:

inorganic

Empirical formula (Hill's system for organic substances):

C6FeK4N6

Structural formula as text:

K4[Fe(CN)6]

Molar/atomic mass: 368.343

Decomposition temperature (°C):

650

Solubility (g/100 g of solvent):

acetone: insoluble (15°C) [Ref.]
ammonia liquid : insoluble [Ref.]
aniline: practically insoluble [Ref.]
benzonitrile: practically insoluble [Ref.]
chlorine liquid: insoluble [Ref.]
diethyl ether: practically insoluble [Ref.]
ethanol 80%: 0.025 (20°C) [Ref.]
ethanol abs.: insoluble [Ref.]
ethyl acetate: practically insoluble [Ref.]
formamide: 14.7 (25°C) [Ref.]
methanol: insoluble (15°C) [Ref.]
methanol: 0.9 (66°C) [Ref.]
pyridine: practically insoluble [Ref.]
sulfur dioxide: insoluble [Ref.]
water: 14.3 (0°C) [Ref.]
water: 20 (10°C) [Ref.]
water: 32.97 (25°C) [Ref.]
water: 35.1 (30°C) [Ref.]
water: 48.4 (50°C) [Ref.]
water: 61.8 (70°C) [Ref.]
water: 74.3 (99.6°C) [Ref.]

Density:

1.935 (25°C, g/cm3)

Reactions:

  1. [Ref.1, Ref.2]
    2K4[Fe(CN)6] + Cl2 → 2K3[Fe(CN)6] + 2KCl

Dissociation:

pKinstab (0) = 24 (25°C, water)

References:

  1. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 721-723
  2. Seidell A. Solubilities of inorganic and organic substances. - 2ed. - New York: D. Van Nostrand Company, 1919. - pp. 531
  3. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 360 [Russian]
  4. Неорганическая химия. – Под ред. Третьякова Ю.Д., Т.3, Кн.2. - М.: Академия, 2007. - pp. 65-66 [Russian]
  5. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 70 [Russian]
  6. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 173 [Russian]
  7. Тананаев И.В., Сейфер Г.Б., Харитонов Ю.Я., Кузнецов В.Г., Корольков А.П. Химия ферроцианидов. - М.: Наука, 1971. - pp. 38-39 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru