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Properties of substance:
oxirane
Synonyms:
ethylene oxide
Group of substances:
organic
Physical appearance:
colorless gas
Empirical formula (Hill's system for organic substances):
C
2
H
4
O
Molar/atomic mass: 44.05
Melting point (°C):
-111.7
Boiling point (°C):
10.73
Decomposition temperature (°C):
400
Solubility (g/100 g of solvent):
acetone
: very soluble [
Ref.
]
carbon tetrachloride
: very soluble [
Ref.
]
chloroform
: very soluble [
Ref.
]
diethyl ether
: very soluble [
Ref.
]
ethanol
: very soluble [
Ref.
]
water
: 68.9 (10°C) [
Ref.
]
Numerical data:
Interatomic distances (in pm): 146
Not numerical data:
mutagen
Density:
0.8839 (10°C, g/cm
3
)
Refractive index (n
D
):
1.364 (7°C)
Vapour pressure (Torr):
19.5 (-57°C)
110.6 (-30.4°C)
257.6 (-14.6°C)
493.1 (0°C)
768 (11°C)
824.8 (12.8°C)
Permittivity (dielectric constant):
13.9 (-1°C)
Dipole moment (D):
1.89 (20°C)
Viscosity (mPa·s):
0.322 (0°C)
Surface tension (mN/m):
24.3 (20°C)
26.39 (10°C)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-51 (g)
Standard molar Gibbs energy of formation Δ
f
G
0
(298.15 K, kJ/mol):
-11.67 (g)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
243.1 (g)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
48.1 (g)
Molar enthalpy (heat) of fusion Δ
fus
H (kJ/mol):
5.17
Autoignition temperature (°C):
429
Heat of combustion (kJ/mol):
1264
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-78 (l)
Standard molar Gibbs energy of formation Δ
f
G
0
(298.15 K, kJ/mol):
-11.8 (l)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
153.9 (l)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
88 (l)
Critical temperature (°C):
195.78
Critical pressure (MPa):
7.19
References:
CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-22
Seidell A. Solubilities of organic compounds. - 3ed., vol.2. - New York: D. Van Nostrand Company, 1941. - pp. 100-101
Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 559 [Russian]
Окись этилена. - М.: Химия, 1967 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 169 [Russian]
Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 381-382 [Russian]
Хёрд Ч.Д. Пиролиз соединений углерода. - Л.-М.: ГОНТИ РКТП СССР, 1938. - pp. 168 [Russian]
Химия: справочное руководство. - Под ред. Гаврюченкова Ф.Г., Курочкиной М.И. и др. - Л.: Химия, 1975. - pp. 358 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru