Main page (Russian) Search in database (English)

Properties of substance:

sodium hydrogen phosphate heptahydrate

Group of substances:

inorganic

Physical appearance:

colorless monoclinic crystals

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

H15Na2O11P

Structural formula as text:

Na2HPO4 * 7H2O

Molar/atomic mass: 268.066

Decomposition temperature (°C):

48

Solubility (g/100 g of solvent):

ethanol: insoluble [Ref.]
water: very soluble [Ref.]

Density:

1.68 (20°C, g/cm3)

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

-3821 (s)

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

434 (s)

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

438 (s)

References:

  1. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 168-169 [Russian]

    What information do you need?




    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru