“Tetrahydrofuran (data page)”的意思、由来-开放百科全书

The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source such as [https://web.archive.org/web/20070630043133/http://siri.org/msds/index.php SIRI], and follow its directions. MSDS is available at Mallinckrodt Baker.

Structure and properties

Index of refraction, n_D

1.4040 at 25°C

Abbe number

Dielectric constant, ε_r^[1]

7.52 ε₀ at 22 °C

Bond strength

Bond length

Bond angle

Magnetic susceptibility

Viscosity^[1]

0.456 mPa·s at 25°C

Phase behavior

Triple point

164.76 K (–108.39 °C), ? Pa

Critical point

541 K (268 °C), 5190 kPa

Std enthalpy change
of fusion, Δ_fusH^o

8.540 kJ/mol

Std entropy change
of fusion, Δ_fusS^o

51.8 J/(mol·K)

Std enthalpy change
of vaporization, Δ_vapH^o

32 kJ/mol

Std entropy change
of vaporization, Δ_vapS^o

51.8 J/(mol·K)

Solid properties

Std enthalpy change
of formation, Δ_fH^o_solid

? kJ/mol

Standard molar entropy,
S^o_solid

? J/(mol K)

Heat capacity, c_p

? J/(mol K)

Liquid properties

Std enthalpy change
of formation, Δ_fH^o_liquid

? kJ/mol

Standard molar entropy,
S^o_liquid

203.8 J/(mol K)

Enthalpy of combustion, Δ_cH^o

–2501.2 kJ/mol

Heat capacity, c_p

123 J/(mol K) at 25°C

Gas properties

Std enthalpy change
of formation, Δ_fH^o_gas

–184.2 kJ/mol

Standard molar entropy,
S^o_gas

301.7 J/(mol K)

Heat capacity, c_p

76.6 J/(mol K) at 25°C

Vapor pressure of liquid

P in mBar^[2]

9.9

19.5

36.3

63.9

107

173

268

402

586

831

1013

T in °C

–30

–20

–10

Distillation data

Vapor-Liquid Equilibrium
of Tetrahydrofuran/Ethanol^[4]
P = 100 kPa

BP
Temp.
°C

% by mole THF

liquid

vapor

78.

0.00

77.4

1.72

3.69

76.2

5.36

11.5

73.8

13.9

26.4

71.0

26.3

42.8

67.7

49.7

62.8

67.2

54.3

65.4

65.9

71.5

76.2

65.4

85.7

86.5

65.2

90.8

65.4

91.8

91.48

65.4

94.99

94.46

65.5

98.15

97.9

65.6

100.0

UV-Vis

λ_max

? nm

Extinction coefficient, ε

Major absorption bands

? cm⁻¹

NMR

Proton NMR

Carbon-13 NMR

Other NMR data

Masses of
main fragments

References

1. ^¹²{{Cite web|url=http://www.sigmaaldrich.com/chemistry/solvents/tetrahydrofuran-center.html|title=Tetrahydrofuran Physical Properties|publisher=Sigma-Aldrich|accessdate=25 June 2009}}
2. ^{{Cite web|url=http://www.basf.com/diols/pdfs/thf_brochure.pdf|archive-url=https://wayback.archive-it.org/all/20080309162147/http://www.basf.com/diols/pdfs/thf_brochure.pdf|dead-url=yes|archive-date=9 March 2008|publisher=BASF|title=Tetrahydrofuran (THF) Storage and Handling|accessdate=24 May 2007}}
3. ^{{Cite web|url=http://www.cheric.org/research/kdb/hcprop/cmpsrch.php|title=Pure Component Properties|accessdate=24 May 2007|publisher=Chemical Engineering Research Information Center}}
4. ^{{Cite web|url=http://www.cheric.org/research/kdb/hcvle/hcvle.php|title=Binary Vapor-Liquid Equilibrium Data|publisher=Chemical Engineering Research Information Center|accessdate=24 May 2007}}

Except where noted otherwise, data relate to standard ambient temperature and pressure.