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Properties of substance:

magnesium sulfate heptahydrate


Physical appearance:

colorless rhombic crystals

Empirical formula (Hill's system):

H14MgO11S

Structural formula:

MgSO4 · 7H2O

Molar/atomic mass: 246.47

Destruction point (°C):

150

Solubility (g/100 g of solvent):

water: very soluble [Ref.]
glycerol: soluble [Ref.]
methanol: 29 (3°C) [Ref.]
methanol: 41 (17°C) [Ref.]
ethanol: 1.3 (3°C) [Ref.]

Density:

1.68 (20°C, g/cm3)

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

    -3384 (s)

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

    -2868 (s)

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

    393 (s)

    Molar heat capacity at constant pressure Cp (298.15 K, J/mol·K):

    372 (s)

    References:

    1. Беликов В.Г. Учебное пособие по фармацевтической химии. - М.: Медицина, 1979. - pp. 52
    2. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 121
    3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 78
    4. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 775
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru