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Properties of substance:

iron(II) orthosilicate

Group of substances:

inorganic

Physical appearance:

colorless orthorhombic crystals

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

Fe2O4Si

Structural formula as text:

Fe2SiO4

Molar/atomic mass: 203.774

Melting point (°C):

1217

Solubility (g/100 g of solvent):

water: insoluble [Ref.]

Density:

4.34 (20°C, g/cm3)

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

    -1478 (s)

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

    145 (s)

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

    132.9 (s)

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

    92

    Neel temperature (K):

    65

    References:

    1. Войткевич Г.В., Кокин А.В., Мирошников А.Е., Прохоров В.Г. Справочник по геохимии. - М.: Недра, 1990. - pp. 49 [Russian]
    2. Волков А.И., Жарский И.М. Большой химический справочник. - Минск: Современная школа, 2005. - pp. 147 [Russian]
    3. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 118-119 [Russian]
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru