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Properties of substance:

sodium orthosilicate

Group of substances:

inorganic

Physical appearance:

colorless monoclinic crystals

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

Na4O4Si

Structural formula as text:

Na4SiO4

Molar/atomic mass: 184.042

Melting point (°C):

1118

Solubility (g/100 g of solvent):

water: soluble [Ref.]

Density:

2.58 (20°C, g/cm3)

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

-2281 (s)

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

197 (s)

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

181.6 (s)

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

-2253

References:

  1. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 166-167 [Russian]
  2. Корнеев В.И., Данилов В.В. Жидкое и растворимое стекло. - С-Пб.: Стройиздат, 1996. - pp. 11-13 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru