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Properties of substance:

sodium disilicate

Group of substances:

inorganic

Physical appearance:

colorless monoclinic crystals

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

Na2O5Si2

Structural formula as text:

Na2Si2O5

Molar/atomic mass: 182.148

Melting point (°C):

874

Solubility (g/100 g of solvent):

water: soluble [Ref.]

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

    -2474 (s)

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

    164 (s)

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

    157 (s)

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

    40

    References:

    1. Евстропьев К.С., Торопов Н.А. Химия кремния и физическая химия силикатов. - М.: ГИЛСМ, 1950. - pp. 304 [Russian]
    2. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 166-167 [Russian]
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru