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Properties of substance:

sodium phosphate


Physical appearance:

colorless crystals

Empirical formula (Hill's system):

Na3O4P

Structural formula:

Na3PO4

Molar/atomic mass: 163.94

Melting point (°C):

1340

Solubility (g/100 g of solvent):

water: 5.4 (0°C)
water: 14.5 (25°C)
water: 23.3 (40°C)
water: 54.3 (60°C)
water: 68 (80°C)
water: 94.6 (100°C)

Density:

2.536 (17.5°C, g/cm3)

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

-1935.5 (s)

Standard molar Gibbs energy of formation ΔfG0 (298.15 K, kJ/mol):

-1819 (s)

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

224.7 (s)

    References:

    1. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 1287
    2. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 168-169
    3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 85
    4. Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советсткая энциклопедия, 1983. - pp. 363
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      © Collected Kiper Ruslan Anatolievich