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Properties of substance:

potassium hexacyanocobaltate(III)

Group of substances:

inorganic

Physical appearance:

rhombic crystals

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

C6CoK3N6

Structural formula as text:

K3[Co(CN)6]

Molar/atomic mass: 332.332

Decomposition temperature (°C):

250

Solubility (g/100 g of solvent):

ammonia liquid : very slightly soluble (-33°C) [Ref.]
ethanol: insoluble [Ref.]
water: 2.008 (-0.3485°C) [Ref.]

Density:

1.906 (g/cm3)

Reactions of synthesis:

  1. Yeild 97%. [Ref.1aster]
    Ni(CN)2 + 2KCN + H2O → K2[Ni(CN)4] * H2O
  2. [Ref.1aster]
    2K4[Co(CN)6] + 2H2O → 2K3[Co(CN)6] + 2KOH + H2

References:

  1. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 136-137 [Russian]
  2. Лидин Р.А., Андреева Л.Л., Молочко В.А. Константы неорганических веществ. - М.: Дрофа, 2006. - pp. 96 [Russian]
  3. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 372 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru