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Properties of substance:

cobalt(II) nitrate hexahydrate

Group of substances:

inorganic

Physical appearance:

red monoclinic crystals

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

H12CoN2O12

Structural formula as text:

Co(NO3)2 * 6H2O

Molar/atomic mass: 291.03

Decomposition temperature (°C):

55

Solubility (g/100 g of solvent):

1,4-dioxane: soluble [Ref.]
acetone: very soluble [Ref.]
acetonitrile: soluble [Ref.]
acetophenone: soluble [Ref.]
ammonia liquid : soluble [Ref.]
dibutyl phosphate: soluble [Ref.]
dimethylformamide: 20 (25°C) [Ref.]
ethanol: 100 (12.5°C) [Ref.]
ethyl acetate: difficulty soluble [Ref.]
ethylene glycol : soluble [Ref.]
methyl acetate: soluble [Ref.]
nitric acid: slightly soluble [Ref.]
tetrahydrofuran: soluble [Ref.]
water: 83.5 (0°C) [Ref.]
water: 97.3 (20°C) [Ref.]
water: 102.5 (25°C) [Ref.]
water: 111.4 (30°C) [Ref.]
water: 211 (80°C) [Ref.]

Hygroscopic:

yes

Density:

2.13 (20°C, g/cm3)

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

-2209 (s)

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

473.9 (s)

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 4-60
  2. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 73 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru