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 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 changeof fusion, ΔfusHo 8.540 kJ/mol Std entropy changeof fusion, ΔfusSo 51.8 J/(mol·K) Std enthalpy changeof vaporization, ΔvapHo 32 kJ/mol Std entropy changeof vaporization, ΔvapSo 51.8 J/(mol·K) Solid properties Std enthalpy changeof formation, ΔfHosolid ? kJ/mol Standard molar entropy,Sosolid ? J/(mol K) Heat capacity, cp 81.65 J/(mol K) at −108.39°C Liquid properties Std enthalpy changeof formation, ΔfHoliquid ? kJ/mol Standard molar entropy,Soliquid 203.8 J/(mol K) Enthalpy of combustion, ΔcHo −2501.2 kJ/mol Heat capacity, cp 107.4 J/(mol K) at −108.39 °C 123.9 J/(mol K) at 25°C Gas properties Std enthalpy changeof formation, ΔfHogas −184.2 kJ/mol Standard molar entropy,Sogas 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

P in mBar 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 Equilibriumof Tetrahydrofuran/EthanolP = 100 kPa BPTemp.°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 Proton NMR   Carbon-13 NMR   Other NMR data   MS Masses of main fragments  

References