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Properties of substance:

Group of substances:

inorganic

Physical appearance:

colorless monoclinic crystals

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

H12K2MgO14S2

Structural formula as text:

K2Mg(SO4)2 * 6H2O

Molar/atomic mass: 402.72

Decomposition temperature (°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 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru