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Properties of substance:

ammonium chromate


Physical appearance:

yellow monoclinic crystals

Empirical formula (Hill's system):

H8CrN2O4

Structural formula:

(NH4)2CrO4

Molar/atomic mass: 152.07

Destruction point (°C):

180

Solubility (g/100 g of solvent):

liquid ammonia: slightly soluble
acetone: slightly soluble
water: 24.7 (0°C)
water: 40.5 (30°C)
water: 70.1 (75°C)
dimethylsulphoxide: 0.9 (25°C)
ethanol: insoluble

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
    5. Неорганические соединения хрома: Справочник. - Л.: Химия, 1981. - pp. 102
    6. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 221
    7. Справочник химика. - Т.2. - Л.-М.: Химия, 1964. - pp. 28-29
    8. Химическая технология неорганических веществ. - Кн.2, под ред. Ахметова Т.Г. - М.: Высшая школа, 2002. - pp. 148-149
    9. Химическая энциклопедия. - Т.5. - М.: Советская энциклопедия, 1999. - pp. 320
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      © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru