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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):

C4H8O

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/cm3)

Reactions:

  1. Yeild 61%. [Ref.1]
    6(CH2CH2)2O + B2H6 → 2(CH3CH2CH2CH2O)3B
  2. Yeild 83%. [Ref.1]
    (CH2)4O + Cl2O7 → O3ClOCH2CH2CH2CH2OClO3

Refractive index (nD):

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 ΔfH0 (298.15 K, kJ/mol):

-216.2 (l)

Standard molar entropy S0 (298.15 K, J/(mol·K)):

204.3 (l)

Molar heat capacity at constant pressure Cp (298.15 K, J/(mol·K)):

124 (l)

Enthalpy (heat) of vaporization ΔvapH (kJ/mol):

32.1

Autoignition temperature (°C):

250

Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

-184.1 (g)

Standard molar entropy S0 (298.15 K, J/(mol·K)):

302.4 (g)

Molar heat capacity at constant pressure Cp (298.15 K, J/(mol·K)):

76.3 (g)

LD50 (mg/kg):

3000 (rats, oral)
2300 (guinea pig, oral)
2300 (mice, oral)

References:

  1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-26
  2. Flick E.W. Industrial solvent handbook. - 5ed. - 1998. - pp. 487-493
  3. Yalkowsky S.H., Yan H., Jain P. Handbook of aqueous solubility data. – 2nd ed. - CRC Press, 2010. - pp. 114-115
  4. Вредные вещества в промышленности: Справочник для химиков, инженеров и врачей. - 7-е изд., Т.2. - Л.: Химия, 1976. - pp. 418-419 [Russian]
  5. Некрасов Б.В. Основы общей химии. - Т.1. - М.: Химия, 1973. - pp. 559 [Russian]
  6. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 180 [Russian]
  7. Химическая энциклопедия. - Т. 4. - М.: Советская энциклопедия, 1995. - pp. 552-553 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru