Main page (Russian)
Search in database (English)
Properties of substance:
potassium permanganate
Synonyms:
калий марганцовокислый
Group of substances:
inorganic
Physical appearance:
rhombic crystals
Empirical formula (Hill's system for organic substances):
KMnO
4
Structural formula as text:
KMnO4
Molar/atomic mass: 158.03
Decomposition temperature (°C):
200
Solubility (g/100 g of solvent):
acetic acid
: soluble [
Ref.
]
acetone
: 2.14 (13°C) [
Ref.
]
ammonia liquid
: soluble [
Ref.
]
deuterium oxide
: 2.31 (5°C) [
Ref.
]
deuterium oxide
: 3.62 (15°C) [
Ref.
]
deuterium oxide
: 5.39 (25°C) [
Ref.
]
deuterium oxide
: 7.81 (35°C) [
Ref.
]
ethanol
: reaction [
Ref.
]
ethyl acetate
: insoluble [
Ref.
]
ethylene carbonate
: soluble (40°C) [
Ref.
]
hydrazine
: reaction 2 (20°C) [
Ref.
]
hydrogen chloride liquid anhydrous
: insoluble [
Ref.
]
hydrogen cyanide
: soluble [
Ref.
]
hydrogen fluoride
: reaction [
Ref.
]
methanol
: soluble [
Ref.
]
pyridine
: soluble [
Ref.
]
water
: 4.22 (10°C) [
Ref.
]
water
: 5.31 (15°C) [
Ref.
]
water
: 6.36 (20°C) [
Ref.
]
water
: 7.63 (25°C) [
Ref.
]
water
: 9 (30°C) [
Ref.
]
water
: 12.5 (40°C) [
Ref.
]
water
: 16.8 (50°C) [
Ref.
]
water
: 25 (65°C) [
Ref.
]
Properties of solutions:
5% (wt.), solvent - water
Dynamic viscosity (mPa·s) = 0.989 (20°)
Density (g/cm
3
) = 1.0322 (20°)
Density:
2.7 (20°C, g/cm
3
)
Reactions:
Yeild 76-78%. [
Ref.1
]
3CH
3
(CH
2
)
5
CHO + 2KMnO
4
+ H
2
SO
4
→ 3CH
3
(CH
2
)
5
COOH + K
2
SO
4
+ 2MnO
2
+ H
2
O
[
Ref.1
,
Ref.2
]
2KMnO
4
+ H
2
SO
4
→ Mn
2
O
7
+ K
2
SO
4
+ H
2
O
[
Ref.1
,
Ref.2
]
4KMnO
4
+ 4KOH → 4K
2
MnO
4
+ 2H
2
O + O
2
Refractive index (n
D
):
1.59 (20°C)
Electrode potential:
MnO
4
-
+ e
-
→ MnO
4
2-
, E = 0.558 V (water, 25°C)
MnO
4
-
+ 2H
2
O + 3e
-
→ MnO
2
+ 4OH
-
, E = 0.621 V (water, 25°C)
MnO
4
-
+ 8H
+
+ 5e
-
→ Mn
2+
+ 4H
2
O, E = 1.531 V (water, 25°C)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-813.4 (s)
Standard molar Gibbs energy of formation Δ
f
G
0
(298.15 K, kJ/mol):
-713.8 (s)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
171.71 (s)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
119.2 (s)
LD
50
(mg/kg):
750 (mice, oral)
Spectral properties of the substance:
Ultraviolet/visible spectrum (maximum in nm, layer thickness 1 cm, in parentheses - extinction) = 545 (242)
Ultraviolet/visible spectrum (maximum in nm, layer thickness 1 cm, in parentheses - extinction) = 525 (223)
References:
Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 827-830
Бабаян Э.А., Гаевский А.В., Бардин Е.В. Правовые аспекты оборота наркотических, психотропных, сильнодействующих, ядовитых веществ и прекурсоров. - М.: МЦФЭР, 2000. - pp. 147 [Russian]
Давыдова С.Л. Удивительные макроциклы. - Л.: Химия, 1989. - pp. 45 [Russian]
Лидин Р.А., Аликберова Л.Ю., Логинова Г.П. Неорганическая химия в вопросах. - М.: Химия, 1991. - pp. 173-174 [Russian]
Неорганическая химия. – Под ред. Третьякова Ю.Д., Т.3, Кн.1. - М.: Академия, 2007. - pp. 318-322 [Russian]
Новый справочник химика и технолога. Химическое равновесие. Свойства растворов. - СПб.: НПО Профессионал, 2004, 2007. - pp. 419 [Russian]
Позин М.Е. Технология минеральных солей (удобрений, пестицидов, промышленных солей, окислов и кислот). - Ч.1. - Л.: Химия, 1974. - pp. 779-785 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 69 [Russian]
Химическая энциклопедия. - Т. 2. - М.: Советская энциклопедия, 1990. - pp. 289 [Russian]
Химия и жизнь. - 1990. - №2. - pp. 81 [Russian]
What information do you need?
© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru