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Properties of substance:

sodium iodide dihydrate

Group of substances:

inorganic

Physical appearance:

colorless trigonal crystals

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

H4INaO2

Structural formula as text:

NaI * 2H2O

Molar/atomic mass: 185.92

Decomposition temperature (°C):

68.9

Solubility (g/100 g of solvent):

acetone: very soluble [Ref.]
ethanol: very soluble [Ref.]
methanol: very soluble [Ref.]
water: very soluble [Ref.]

Density:

2.45 (21°C, g/cm3)

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

-884.9 (s)

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

-747.7 (s)

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

115.5 (s)

References:

  1. Волков А.И., Жарский И.М. Большой химический справочник. - Минск: Современная школа, 2005. - pp. 177 [Russian]
  2. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 84 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru