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Properties of substance:

potassium hexacyanocobaltate(II)

Group of substances:

inorganic

Physical appearance:

reddish brown crystals

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

C6CoK4N6

Structural formula as text:

K4[Co(CN)6]

Molar/atomic mass: 371.43

Decomposition temperature (°C):

300

Solubility (g/100 g of solvent):

chloroform: insoluble [Ref.]
diethyl ether: insoluble [Ref.]
ethanol: insoluble [Ref.]
water: very soluble [Ref.]

Hygroscopic:

yes

Reactions:

  1. [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]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru