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Properties of substance:

copper(I) oxide

Synonyms:

cuprous oxide

Group of substances:

inorganic

Physical appearance:

red cubic crystals

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

Cu2O

Molar/atomic mass: 143.09

Melting point (°C):

1242

Solubility (g/100 g of solvent):

boron oxide molten: 0.6 (900°C) [Ref.]
ethanol: insoluble [Ref.]
water: 0.00001 (20°C) [Ref.]

Density:

6 (20°C, g/cm3)

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

-173.2 (s)

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

-150.5 (s)

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

92.93 (s)

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

63.64 (s)

Molar enthalpy (heat) of fusion ΔfusH (kJ/mol):

64.22

LD50 (mg/kg):

470 (rats, oral)

References:

  1. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 493
  2. Вредные химические вещества: Неорганические соединения элементов I-IV групп. Справочник. - Л.: Химия, 1988. - pp. 67 [Russian]
  3. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 80 [Russian]
  4. Химическая энциклопедия. - Т. 2. - М.: Советская энциклопедия, 1990. - pp. 669-670 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru