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Properties of substance:

sodium dihydrogen phosphate

Group of substances:

inorganic

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

H2NaO4P

Structural formula as text:

NaH2PO4

Molar/atomic mass: 119.98

Decomposition temperature (°C):

160

Solubility (g/100 g of solvent):

ethylene glycol : 0.908 (25°C) [Ref.]
ethylene glycol : 0.946 (35°C) [Ref.]
water: 57.85 (0.1°C) [Ref.]
water: 84.5 (18°C) [Ref.]
water: 85.19 (20°C) [Ref.]
water: 158.6 (50°C) [Ref.]
water: 246.5 (99.1°C) [Ref.]

Properties of solutions:

10% (wt.), solvent - water
  Dynamic viscosity (mPa·s) = 1.428 (20°)
  Density (g/cm3) = 1.0747 (20°)
  Index of refraction = 1.346 (20°)
  Freezing point (°C) = -2.58

Standard molar enthalpy (heat) of formation ΔfH (298 K, kJ/mol)

-1537 (s) [Ref.]

Standard molar entropy S (298 K, J/(mol·K))

127 (s) [Ref.]

Molar heat capacity at constant pressure Cp (298 K, J/(mol·K))

117 (s) [Ref.]

References:

  1. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 1289-1290
  2. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 119 [Russian]
  3. Химический энциклопедический словарь. - Под ред. Кнунянц И.Л. - М.: Советская энциклопедия, 1983. - pp. 363 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru