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Properties of substance:
potassium perrhenate
Group of substances:
inorganic
Physical appearance:
colorless hexagonal crystals
Empirical formula (Hill's system for organic substances):
KO
4
Re
Structural formula as text:
KReO4
Molar/atomic mass: 289.303
Melting point (°C):
555
Boiling point (°C):
1370
Solubility (g/100 g of solvent):
deuterium oxide
: 0.987 (25°C) [
Ref.
]
ethanol
: sparingly soluble [
Ref.
]
water
: 1.21 (20°C) [
Ref.
]
water
: 14 (100°C) [
Ref.
]
Density:
4.38 (20°C, g/cm
3
)
Reactions:
[
Ref.1
]
2KReO
4
+ 7H
2
→ 2Re + 2KOH + 6H
2
O
[
Ref.1
]
2KReO
4
+ 6KI + 16HCl → 2K
2
ReCl
6
+ 4KCl + 3I
2
+ 8H
2
O
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-1113 (s)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
167.8 (s)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
122.6 (s)
Molar enthalpy (heat) of fusion Δ
fus
H (kJ/mol):
32
LD
50
(mg/kg):
2800 (mice, intraperitoneal)
References:
Armarego W. L. F. Purification of Laboratory Chemicals. - 7ed. - 2013. - pp. 603
Lewis R.J. Sax's Dangerous Properties of Industrial Materials. - 12ed., Vol. 1-5. - Wiley, 2012. - pp. 3740
Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 856
Ефимов А.И. и др. Свойства неорганических соединений. Справочник. - Л.: Химия, 1983. - pp. 130-131 [Russian]
Редкие и рассеянные элементы. Химия и технология. - Кн. 3. - М.: Мисис, 2003. - pp. 320 [Russian]
Сонгина О.А. Редкие металлы. - 3 изд. - М.: Металлургия, 1964. - pp. 29-30 [Russian]
Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 170 [Russian]
Справочник экспериментальных данных по растворимости солевых систем. - Т. 3. - Л.: ГНТИХЛ, 1961. - pp. 1960-1962 [Russian]
Химия и технология редких и рассеянных элементов. - Ч. 3. - М.: Высшая школа, 1976. - pp. 282-284 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru