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Properties of substance:

potassium bromide



skc-file

Group of substances:

inorganic

Physical appearance:

colorless cubic crystals

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

BrK

Structural formula as text:

KBr

Molar/atomic mass: 119.002

Melting point (°C):

730

Boiling point (°C):

1380

Solubility (g/100 g of solvent):

1-butanol: 0.0112 (20°C) [Ref.]
1-butanol: 0.0148 (50°C) [Ref.]
1-pentanol: 0.003 (25°C) [Ref.]
1-propanol: 0.035 (25°C) [Ref.]
2-butanol: 0.0044 (25°C) [Ref.]
2-propanol: 0.011 (25°C) [Ref.]
N-methylformamide: 5.57 (25°C) [Ref.]
acetic acid: 0.2187 (30°C) [Ref.]
acetone: 0.00454 (18°C) [Ref.]
acetone: 0.00415 (37°C) [Ref.]
acetonitrile: 0.023 (18°C) [Ref.]
acetonitrile: 0.024 (25°C) [Ref.]
ammonia liquid : 40.32 (-33.9°C) [Ref.]
ammonia liquid : 26.87 (0°C) [Ref.]
ammonia liquid : 13.5 (25°C) [Ref.]
antimony trichloride: very soluble [Ref.]
bromine liquid: 0.0185 (25°C) [Ref.]
deuterium oxide: 42.45 (5°C) [Ref.]
deuterium oxide: 51.75 (20°C) [Ref.]
deuterium oxide: 67.22 (50°C) [Ref.]
deuterium oxide: 89 (100°C) [Ref.]
diethyl ether: 0.02 (15°C) [Ref.]
dimethylformamide: 0.91 (25°C) [Ref.]
dimethylsulfoxide: 5.03 (25°C) [Ref.]
dimethylsulfoxide: 3.24 (29.7°C) [Ref.]
dimethylsulfoxide: 3.86 (73.6°C) [Ref.]
ethanol: 0.135 (25°C) [Ref.]
ethanol 50%: 16.4 (20°C) [Ref.]
ethanolamine: 3.27 (25°C) [Ref.]
ethyl acetate: insoluble [Ref.]
ethylene glycol : 15.85 (30°C) [Ref.]
ethylenediamine: 0.78 (25°C) [Ref.]
formamide: 21.5 (25°C) [Ref.]
formic acid 95%: 23.2 (18.5°C) [Ref.]
furfural : 0.12 (25°C) [Ref.]
glycerol: 17.8 (25°C) [Ref.]
hydrazine: 60 (20°C) [Ref.]
hydrogen cyanide: sparingly soluble [Ref.]
hydroxylamine: 44.7 (18°C) [Ref.]
i-amyl alcohol: 0.002 (20°C) [Ref.]
i-amyl alcohol: 0.00175 (25°C) [Ref.]
i-butanol: 0.0076 (25°C) [Ref.]
iodine monochloride: soluble [Ref.]
methanol: 1.82 (0°C) [Ref.]
methanol: 1.93 (10°C) [Ref.]
methanol: 2 (15°C) [Ref.]
methanol: 2.08 (20°C) [Ref.]
methanol: 2.17 (25°C) [Ref.]
methanol: 2.23 (30°C) [Ref.]
methanol: 2.37 (40°C) [Ref.]
methanol: 2.55 (50°C) [Ref.]
methanol: 2.74 (60°C) [Ref.]
phosphorus(V) trichloride oxide: 0.031 (20°C) [Ref.]
propylene carbonate: 0.0474 (25°C) [Ref.]
propylene carbonate: 0.0453 (30°C) [Ref.]
propylene carbonate: 0.0447 (35°C) [Ref.]
propylene carbonate: 0.0459 (40°C) [Ref.]
propylene carbonate: 0.0499 (45°C) [Ref.]
pyridine: sparingly soluble [Ref.]
sulfur dioxide: 2.81 (0°C) [Ref.]
tetrahydrofuran: 0.0337 (25°C) [Ref.]
water: 53.5 (0°C) [Ref.]
water: 59.5 (10°C) [Ref.]
water: 65.2 (20°C) [Ref.]
water: 68.1 (25°C) [Ref.]
water: 70.9 (30°C) [Ref.]
water: 75.8 (40°C) [Ref.]
water: 85.5 (60°C) [Ref.]
water: 94.6 (80°C) [Ref.]
water: 103.3 (100°C) [Ref.]
water: 127.3 (150°C) [Ref.]
water: 153.2 (200°C) [Ref.]

Properties of solutions:

30% (wt.), solvent - water
  Dynamic viscosity (mPa·s) = 0.952 (20°)
  Density (g/cm3) = 1.2593 (20°)
  Index of refraction = 1.3743 (20°)
  Freezing point (°C) = -11.82
40% (wt.), solvent - water
  Density of a material to that water at 4°C = 1.3746 (20°)

Density:

2.75 (25°C, g/cm3)

Reactions:

  1. Yeild 65%. [Ref.1aster]
    CH3COCH3 + 3KBr + 3H2O → CHBr3 + CH3COOK + 2KOH + 3H2
  2. [Ref.1aster]
    2KBr + H2SO4 → 2HBr + K2SO4

Dipole moment (D):

9.1 (647°C)

Viscosity (mPa·s):

1.18 (747°C)
0.92 (847°C)
0.83 (907°C)

Surface tension (mN/m):

88.2 (750°C)
81 (850°C)
73.8 (950°C)

Speed sound (m/s):

1770 (742°C, aggregative state - liquid)
3550 (20°C, aggregative state - crystals, ось L100)
1360 (20°C, aggregative state - crystals, ось S100)
3020 (20°C, aggregative state - crystals, ось L110)

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

-180 (g)

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

250.42 (g)

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

36.93 (g)

Standard molar enthalpy (heat) of formation ΔfH (298 K, kJ/mol)

-393.8 (s) [Ref.]

Standard molar Gibbs energy of formation ΔfG (298 K, kJ/mol)

-380.7 (s) [Ref.]

Standard molar entropy S (298 K, J/(mol·K))

95.9 (s) [Ref.]

Molar heat capacity at constant pressure Cp (298 K, J/(mol·K))

52.3 (s) [Ref.]

Enthalpy (heat) of fusion ΔfusH (kJ/mol)

25.52 (s) [Ref.]

References:

  1. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 685-696
  2. Беликов В.Г. Учебное пособие по фармацевтической химии. - М.: Медицина, 1979. - pp. 18 [Russian]
  3. Лурье Ю.Ю. Справочник по аналитической химии. - М.: Химия, 1971. - pp. 91 [Russian]
  4. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 68 [Russian]
  5. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 685-688, 738-739 [Russian]
  6. Справочник химика. - Т. 2. - Л.-М.: Химия, 1964. - pp. 80-81 [Russian]
  7. Физические величины. - Под ред. Григорьева И.С., Мейлихова Е.З. - М.: Энергоатомиздат, 1991. - pp. 141 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru