Tetrahydrofuran (data page) explained

This page provides supplementary chemical data on tetrahydrofuran.

Material Safety Data Sheet

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 SIRI, and follow its directions. MSDS is available at Mallinckrodt Baker.

Structure and properties

	Structure and properties
Index of refraction, nD	1.4040 at 25°C
Abbe number	?
Dielectric constant, εr^[1]	7.52 ε0 at 22 °C
Bond strength	?
Bond length	?
Bond angle	?
Magnetic susceptibility	?
Viscosity	0.456 mPa·s at 25°C

Thermodynamic properties

	Phase behavior
Triple point	164.76 K (−108.39 °C), ? Pa
Critical point	541 K (268 °C), 5190 kPa
Std enthalpy change of fusion, ΔfusH^o	8.540 kJ/mol
Std entropy change of fusion, ΔfusS^o	51.8 J/(mol·K)
Std enthalpy change of vaporization, ΔvapH^o	32 kJ/mol
Std entropy change of vaporization, ΔvapS^o	51.8 J/(mol·K)
	Solid properties
Std enthalpy change of formation, ΔfH^osolid	? kJ/mol
Standard molar entropy, S^osolid	? J/(mol K)
Heat capacity, cp^[2]	81.65 J/(mol K) at −108.39°C
	Liquid properties
Std enthalpy change of formation, ΔfH^oliquid	? kJ/mol
Standard molar entropy, S^oliquid	203.8 J/(mol K)
Enthalpy of combustion, ΔcH^o	−2501.2 kJ/mol
Heat capacity, cp	107.4 J/(mol K) at −108.39 °C123.9 J/(mol K) at 25°C
	Gas properties
Std enthalpy change of formation, ΔfH^ogas	−184.2 kJ/mol
Standard molar entropy, S^ogas	301.7 J/(mol K)
Heat capacity, cp	76.6 J/(mol K) at 25°C

Vapor pressure of liquid

Vapor pressure 143 mm Hg at 20°C^[1]

	P in mBar^[3]	9.9	19.5	36.3	63.9	107	173	268	402	586	831	1013
	T in °C	−30	−20	−10	0	10	20	30	40	50	60	66

Distillation data

Vapor-Liquid Equilibrium of Tetrahydrofuran/Ethanol^[4] P = 100 kPa
BP Temp. °C	% by mole THF
	liquid	vapor
78.	0.00	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	90.8
65.4	91.8	91.48
65.4	94.99	94.46
65.5	98.15	97.9
65.6	100.0	100.0

Spectral data

	UV-Vis
λmax	? nm
Extinction coefficient, ε	?
	IR
Major absorption bands	? cm^−1
	NMR
Other NMR data
	MS
Masses of main fragments

References

• NIST Standard Reference Database. 1997 . 10.18434/T4D303 . Linstrom . Peter . National Institute of Standards and Technology .

Notes and References

1. Web site: Tetrahydrofuran Physical Properties. Sigma-Aldrich. 25 June 2009.
2. 1978-04-01. Thermodynamic properties of tetrahydrofuran from 8 to 322 K. The Journal of Chemical Thermodynamics. en. 10. 4. 321–329. 10.1016/0021-9614(78)90064-2. 0021-9614. Lebedev . B.V . Rabinovich . I.B . Milov . V.I . Lityagov . V.Ya .
3. Web site: Tetrahydrofuran (THF) Storage and Handling. https://wayback.archive-it.org/all/20080309162147/http://www.basf.com/diols/pdfs/thf_brochure.pdf. dead. 9 March 2008. BASF. 24 May 2007.
4. Web site: Binary Vapor-Liquid Equilibrium Data. Chemical Engineering Research Information Center. 24 May 2007.