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Properties of substance:

ammonium chromate

Group of substances:

inorganic

Physical appearance:

yellow monoclinic crystals

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

H8CrN2O4

Structural formula as text:

(NH4)2CrO4

Molar/atomic mass: 152.07

Decomposition temperature (°C):

180

Solubility (g/100 g of solvent):

acetone: slightly soluble [Ref.]
ammonia liquid : slightly soluble [Ref.]
dimethylsulfoxide: 0.9 (25°C) [Ref.]
ethanol: insoluble [Ref.]
water: 24.7 (0°C) [Ref.]
water: 40.5 (30°C) [Ref.]
water: 70.1 (75°C) [Ref.]

Density:

1.9 (20°C, g/cm3)

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

-1163 (s)

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

657 (s)

References:

  1. Lewis R.J. Sax's Dangerous Properties of Industrial Materials. - 11ed. - Wiley-interscience, 2004. - pp. 232
  2. Perry D.L. Handbook of Inorganic Compounds. - 2nd ed. - CRC Press, 2011. - pp. 20
  3. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 1096-1097
  4. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 100-101 [Russian]
  5. Неорганические соединения хрома: Справочник. - Л.: Химия, 1981. - pp. 102 [Russian]
  6. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 221 [Russian]
  7. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 28-29 [Russian]
  8. Химическая технология неорганических веществ. - Кн.2, под ред. Ахметова Т.Г. - М.: Высшая школа, 2002. - pp. 148-149 [Russian]
  9. Химическая энциклопедия. - Т. 5. - М.: Советская энциклопедия, 1999. - pp. 320 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru