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Properties of substance:

calcium dihydrogen phosphate monohydrate

Group of substances:

inorganic

Physical appearance:

colorless triclinic crystals

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

H6CaO9P2

Structural formula as text:

Ca(H2PO4)2 * H2O

Molar/atomic mass: 252.07

Decomposition temperature (°C):

109

CAS №: 10031-30-8

Solubility (g/100 g of solvent):

water: 1 (25°C) [Ref.]

Hygroscopic:

yes

Density:

2.2 (16°C, g/cm3)

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

-3417.6 (s)

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

-3094.9 (s)

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

259.83 (s)

References:

  1. CRC Handbook of Chemistry and Physics. - 95ed. - CRC Press, 2014. - pp. 4-55
  2. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 72 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru