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Properties of substance:

potassium perchlorate

Group of substances:

inorganic

Physical appearance:

colorless rhombic crystals

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

ClKO4

Structural formula as text:

KClO4

Molar/atomic mass: 138.55

Melting point (°C):

610

Solubility (g/100 g of solvent):

1-butanol: 0.0045 (25°C) [Ref.]
1-propanol: 0.01 (25°C) [Ref.]
acetic acid: 0.00258 (25°C) [Ref.]
acetone: 0.16 (25°C) [Ref.]
ammonia liquid : 39.55 (-33°C) [Ref.]
ammonia liquid : 47.46 (0°C) [Ref.]
ammonia liquid : 48.1 (25°C) [Ref.]
deuterium oxide: 1.78 (25°C) [Ref.]
diethyl ether: insoluble [Ref.]
ethanol: 0.0047 (0°C) [Ref.]
ethanol: 0.012 (25°C) [Ref.]
ethanol 90%: 0.036 (25.2°C) [Ref.]
ethanolamine: 1.36 (25°C) [Ref.]
ethyl acetate: 0.0015 (25°C) [Ref.]
ethylene glycol : 1.03 (25°C) [Ref.]
ethylenediamine: 2.81 (25°C) [Ref.]
hydrogen fluoride : 10.6 [Ref.]
i-butanol: 0.005 (25°C) [Ref.]
methanol: 0.105 (25°C) [Ref.]
nitric acid: 1.01 (-0.401°C) [Ref.]
perchloric acid anhydrous: 4.26 (0°C) [Ref.]
propylene carbonate: 0.633 (25°C) [Ref.]
propylene carbonate: 0.644 (30°C) [Ref.]
propylene carbonate: 0.6969 (35°C) [Ref.]
propylene carbonate: 0.707 (40°C) [Ref.]
propylene carbonate: 0.722 (45°C) [Ref.]
water: 0.76 (0°C) [Ref.]
water: 1.06 (10°C) [Ref.]
water: 1.8 (20°C) [Ref.]
water: 2.5 (25°C) [Ref.]
water: 4.8 (40°C) [Ref.]
water: 12.3 (70°C) [Ref.]
water: 22 (100°C) [Ref.]

Density:

2.52 (20°C, g/cm3)

Reactions of synthesis:

  1. [Ref.1]
    4KClO3 → 3KClO4 + KCl
  2. [Ref.1]
    NaClO4 + KCl → KClO4 + NaCl

Dissociation:

pKsp (0) = 2 (20°C, water)

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

-430.1 (s)

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

-300.4 (s)

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

151 (s)

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

112.4 (s)

References:

  1. Journal of the American Chemical Society. - 1923. - Vol. 45, No. 2. - pp. 293
  2. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 789-795
  3. Некрасов Б.В. Основы общей химии. - Т.2. - М.: Химия, 1973. - pp. 238 [Russian]
  4. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977 [Russian]
  5. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 695-696 [Russian]
  6. Якименко Л.М. Производство хлора, каустической соды и неорганических хлорпродуктов. - М.: Химия, 1974. - pp. 433-434, 455-457 [Russian]
  7. Якименко Л.М., Серышев Г.А. Электрохимический синтез неорганических соединений. - М.: Химия, 1984. - pp. 79-81 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru