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Properties of substance:
o-xylene
Group of substances:
organic
Physical appearance:
colorless liquid
Empirical formula (Hill's system for organic substances):
C
8
H
1
0
Structural formula as text:
C6H4(CH3)2
Molar/atomic mass: 106.17
Melting point (°C):
-25.175
Boiling point (°C):
144.41
Solubility (g/100 g of solvent):
acetone
: miscible [
Ref.
]
benzene
: miscible [
Ref.
]
carbon tetrachloride
: miscible [
Ref.
]
diethyl ether
: very soluble [
Ref.
]
ethanol
: very soluble [
Ref.
]
hydrogen fluoride
: 0.85 (-15°C) [
Ref.
]
hydrogen fluoride
: 1.02 (0°C) [
Ref.
]
hydrogen fluoride
: 1.12 (5°C) [
Ref.
]
petroleum ether: miscible [
Ref.
]
water
: 0.0175 (20°C) [
Ref.
]
Density:
0.8802 (20°C, d
4
)
Refractive index (n
D
):
1.50545 (20°C)
Dissociation:
pK
BH
+
(1) = -5.3 (0°C, hydrogen fluoride )
Retention indices for gas chromatography:
891,2 (phase - DB-5, temperature-programmed conditions, 6 K/min)
Viscosity (mPa·s):
0.809 (20°C)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-24.455 (l)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
246.614 (l)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
187.945 (l)
Enthalpy (heat) of vaporization Δ
vap
H (kJ/mol):
43.46
LD
50
(mg/kg):
3567 (rats, oral)
Critical temperature (°C):
359
Critical pressure (MPa):
3.65
Critical density (g/cm
3
):
0.28
References:
Dictionary of organic compounds. - Vol.4: Obaculactone-Zymosterol. - New York, 1953. - pp. 677
Yalkowsky S.H., Yan H. Handbook of aqueous solubility data. - CRC Press, 2003. - pp. 492-493
Вредные химические вещества: Углеводороды, галогенпроизводные углеводородов. Справочник. - Л.: Химия, 1990. - pp. 160 [Russian]
Промышленные хлорорганические продукты: Справочник. - М.: Химия, 1978. - pp. 623-625 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 155 [Russian]
Химическая энциклопедия. - Т. 2. - М.: Советская энциклопедия, 1990. - pp. 550 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru
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