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Properties of substance:

ammonium hydrogen phosphate

Group of substances:

inorganic

Physical appearance:

colorless monoclinic crystals

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

H9N2O4P

Structural formula as text:

(NH4)2HPO4

Molar/atomic mass: 132.06

Decomposition temperature (°C):

70

Solubility (g/100 g of solvent):

acetone: insoluble [Ref.]
ammonia liquid : insoluble [Ref.]
ethanol: insoluble [Ref.]
water: 42.9 (0°C) [Ref.]
water: 62.8 (10°C) [Ref.]
water: 69 (20°C) [Ref.]
water: 75.2 (30°C) [Ref.]
water: 81.8 (40°C) [Ref.]
water: 89.2 (50°C) [Ref.]
water: 106 (70°C) [Ref.]

Multicomponent solubility (in wt%):

water 57.62%, IPA 39.2%, ammonium hydrogen phosphate 3.18%, 25 °C [Ref.]
water 61.61%, IPA 32.84%, ammonium hydrogen phosphate 5.55%, 25 °C [Ref.]
water 65.67%, IPA 24.8%, ammonium hydrogen phosphate 9.53%, 25 °C [Ref.]
water 67.16%, IPA 20.1%, ammonium hydrogen phosphate 12.74%, 25 °C [Ref.]
water 68.62%, IPA 14.9%, ammonium hydrogen phosphate 16.48%, 25 °C [Ref.]
water 68.7%, IPA 14.11%, ammonium hydrogen phosphate 17.19%, 25 °C [Ref.]
water 68.71%, IPA 13.19%, ammonium hydrogen phosphate 18.1%, 25 °C [Ref.]
water 68.01%, IPA 8.79%, ammonium hydrogen phosphate 23.2%, 25 °C [Ref.]
water 66.68%, IPA 6.18%, ammonium hydrogen phosphate 27.14%, 25 °C [Ref.]
water 63.54%, IPA 3.62%, ammonium hydrogen phosphate 32.84%, 25 °C [Ref.]

Density:

1.619 (20°C, g/cm3)

Refractive index (nD):

1.53 (20°C)

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

-1566 (s)

References:

  1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-14
  2. Journal of Physical and Chemical Reference Data. - 1998. - Vol. 27, No. 6. - pp. 1289-1459
  3. Milne G.W.A. Gardner's Commercially Important Chemicals. - Wiley-Interscience, 2005. - pp. 35
  4. Patnaik P. Handbook of inorganic chemicals. - McGraw-Hill, 2003. - pp. 42
  5. Perry D.L. Handbook of Inorganic Compounds. - 2nd ed. - CRC Press, 2011. - pp. 26
  6. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 54 [Russian]
  7. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 218-219 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru