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Properties of substance:

calcium nitrate tetrahydrate

Group of substances:

inorganic

Physical appearance:

colorless monoclinic crystals

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

H8CaN2O10

Structural formula as text:

Ca(NO3)2 * 4H2O

Molar/atomic mass: 236.15

Melting point (°C):

40

Decomposition temperature (°C):

100

Solubility (g/100 g of solvent):

acetone: soluble [Ref.]
dimethylformamide: 20 (25°C) [Ref.]
dimethylsulfoxide: 27 (25°C) [Ref.]
ethanol: soluble [Ref.]
water: very soluble [Ref.]

Hygroscopic:

yes

Density:

1.82 (20°C, g/cm3)

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

-2131.2 (s)

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

-1700.8 (s)

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

339 (s)

Molar enthalpy (heat) of fusion ΔfusH (kJ/mol):

30.8

References:

  1. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 138-139 [Russian]
  2. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 71 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru