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Properties of substance:

Physical appearance:

colorless monoclinic crystals

Empirical formula (Hill's system):

H12K2MgO14S2

Structural formula:

K2Mg(SO4)2 · 6H2O

Molar/atomic mass: 402.72

Destruction point (°C):

72

Solubility (g/100 g of solvent):

water: 14.1 (0°C) [Ref.]
water: 18.3 (20°C) [Ref.]
water: 43.8 (75°C) [Ref.]

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

    -4544 (s)

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

    536 (s)

    References:

    1. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 128-129
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru