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Properties of substance:

potassium ferrocyanide trihydrate

Synonyms:

potassium hexacyanoferrate(II) trihydrate

Group of substances:

inorganic

Physical appearance:

yellow tetragonal crystals

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

C6H6FeK4N6O3

Structural formula as text:

K4[Fe(CN)6] * 3H2O

Molar/atomic mass: 422.39

Melting point (°C):

70

Decomposition temperature (°C):

87.5

Solubility (g/100 g of solvent):

acetone: soluble [Ref.]
ethanol: insoluble [Ref.]
water: 14.5 (0°C) [Ref.]
water: 21 (10°C) [Ref.]
water: 28 (20°C) [Ref.]
water: 31.5 (25°C) [Ref.]
water: 35.3 (30°C) [Ref.]
water: 48.3 (50°C) [Ref.]
water: 67 (80°C) [Ref.]

Numerical data:

Critical relative humidity (%): 96.2

Density:

1.94 (25°C, g/cm3)

    Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

    -1423.8 (s)

    Standard molar Gibbs energy of formation ΔfG0 (298.15 K, kJ/mol):

    -1097.5 (s)

    Standard molar entropy S0 (298.15 K, J/(mol·K)):

    598 (s)

    References:

    1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 4-82
    2. Journal of Thermal Analysis. - 1978. - Vol. 14, No. 3. - pp. 253-264 [DOI: 10.1007/bf01915163 ]
    3. Лидин Р.А., Андреева Л.Л., Молочко В.А. Константы неорганических веществ. - М.: Дрофа, 2006. - pp. 107 [Russian]
    4. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 360 [Russian]
    5. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 70 [Russian]
    6. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 64-65 [Russian]
    7. Тананаев И.В., Сейфер Г.Б., Харитонов Ю.Я., Кузнецов В.Г., Корольков А.П. Химия ферроцианидов. - М.: Наука, 1971 [Russian]
    8. Химическая энциклопедия. - Т. 2. - М.: Советская энциклопедия, 1990. - pp. 287 [Russian]
    9. Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советская энциклопедия, 1983. - pp. 232 [Russian]
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru