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Properties of substance:
tetrahydrofuran
Synonyms:
THF
Group of substances:
organic
Physical appearance:
colorless liquid
Empirical formula (Hill's system for organic substances):
C
4
H
8
O
Structural formula as text:
(CH2CH2)2O
Molar/atomic mass: 72.106
Melting point (°C):
-108.5
Boiling point (°C):
65.6
Solubility (g/100 g of solvent):
ethanol
: soluble [
Ref.
]
water
: miscible [
Ref.
]
water
: 32.43 (72.2°C) [
Ref.
]
water
: 22.48 (92.9°C) [
Ref.
]
Density:
0.8892 (20°C, g/cm
3
)
Reactions:
Yeild 61%. [
Ref.1
]
6(CH
2
CH
2
)
2
O + B
2
H
6
→ 2(CH
3
CH
2
CH
2
CH
2
O)
3
B
Yeild 83%. [
Ref.1
]
(CH
2
)
4
O + Cl
2
O
7
→ O
3
ClOCH
2
CH
2
CH
2
CH
2
OClO
3
Refractive index (n
D
):
1.405 (20°C)
Vapour pressure (Torr):
176 (25°C)
385 (45°C)
Permittivity (dielectric constant):
7.6 (20°C)
Dipole moment (D):
1.63 (20°C)
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-216.2 (l)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
204.3 (l)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
124 (l)
Enthalpy (heat) of vaporization Δ
vap
H (kJ/mol):
32.1
Autoignition temperature (°C):
250
Standard molar enthalpy (heat) of formation Δ
f
H
0
(298.15 K, kJ/mol):
-184.1 (g)
Standard molar entropy S
0
(298.15 K, J/(mol·K)):
302.4 (g)
Molar heat capacity at constant pressure C
p
(298.15 K, J/(mol·K)):
76.3 (g)
LD
50
(mg/kg):
3000 (rats, oral)
2300 (guinea pig, oral)
2300 (mice, oral)
References:
CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-26
Flick E.W. Industrial solvent handbook. - 5ed. - 1998. - pp. 487-493
Yalkowsky S.H., Yan H., Jain P. Handbook of aqueous solubility data. – 2nd ed. - CRC Press, 2010. - pp. 114-115
Вредные вещества в промышленности: Справочник для химиков, инженеров и врачей. - 7-е изд., Т.2. - Л.: Химия, 1976. - pp. 418-419 [Russian]
Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 559 [Russian]
Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 180 [Russian]
Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 552-553 [Russian]
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© Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru