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Properties of substance:

zirconium diboride

Group of substances:

inorganic

Physical appearance:

gray hexagonal crystals

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

B2Zr

Structural formula as text:

ZrB2

Molar/atomic mass: 112.85

Melting point (°C):

3245

Decomposition temperature (°C):

4193

Density:

6.09 (20°C, g/cm3)

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

-328 (s)

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

35.9 (s)

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

48.2 (s)

References:

  1. Dean J.A. Lange's handbook of chemistry. - 1999. - pp. 3.60
  2. Блюменталь У.Б. Химия циркония. - М.: ИИЛ, 1963. - pp. 67-68 [Russian]
  3. Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 218-219 [Russian]
  4. Химическая энциклопедия. - Т. 1. - М.: Советская энциклопедия, 1988. - pp. 304 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru