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Properties of substance:

chlorine dioxide

Group of substances:

inorganic

Physical appearance:

gas

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

ClO2

Structural formula as text:

ClO2

Molar/atomic mass: 67.45

Melting point (°C):

-59

Boiling point (°C):

9.7

Solubility (g/100 g of solvent):

acetic acid: soluble [Ref.]
carbon tetrachloride: soluble [Ref.]
perchloric acid anhydrous: soluble [Ref.]
sulfuric acid: soluble [Ref.]
water: 2.84 (0°C) [Ref.]
water: 6.39 (10°C) [Ref.]
water: 8.4 (20°C) [Ref.]
water: 6.96 (25°C) [Ref.]
water: 4.78 (35°C) [Ref.]

Density:

1.64 (0°C, g/cm3)

Reactions of synthesis:

  1. [Ref.1aster, Ref.2aster]
    2KClO3 + H2C2O4 + H2SO4 → 2ClO2 + 2CO2 + K2SO4 + 2H2O
  2. [Ref.1aster]
    3KClO3 + 3H2SO4 → 2ClO2 + HClO4 + 3KHSO4 + H2O

Reactions:

  1. [Ref.1]
    2ClO2 + F2 → 2ClO2F
  2. [Ref.1aster, Ref.2]
    2ClO2 + 2O3 → Cl2O6 + 2O2

Dipole moment (D):

0.78 (20°C)

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

105 (g)

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

122.3 (g)

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

257 (g)

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

41.97 (g)

Enthalpy (heat) of vaporization ΔvapH (kJ/mol):

26.3

Critical temperature (°C):

192

Critical pressure (MPa):

8.6

References:

  1. Advances in Inorganic Chemistry and Radiochemistry. - 1963. - Vol. 5. - pp. 52-55
  2. Bretherick's Handbook of Reactive Chemical Hazards. - 6 ed., Vol. 1. - Butterworth-Heinemann, 1999. - pp. 1397-1399
  3. Gangolli S. The Dictionary of Substances and their Effects. - 2 ed., Vol. 2, C. - RSC, 1999. - pp. 245-247
  4. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 400
  5. Вредные химические вещества: Неорганические соединения элементов V-VIII групп. Справочник. - Л., 1989. - pp. 380-381 [Russian]
  6. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 262 [Russian]
  7. Никитин И.В. Химия кислородных соединений галогенов. - М.: Наука, 1986. - pp. 65-73 [Russian]
  8. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 109 [Russian]
  9. Реми Г. Курс неорганической химии. - Т.1. - М., 1963. - pp. 861-862 [Russian]
  10. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 345 [Russian]
  11. Химическая энциклопедия. - Т. 5. - М.: Советская энциклопедия, 1999. - pp. 282 [Russian]
  12. Якименко Л.М., Пасманик М.И. Справочник по производству хлора, каустической соды и основных хлорпродуктов. - 2 изд. - М.: Химия, 1976. - pp. 189-193 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru