Tetrahydrofuran (data page)
# Tetrahydrofuran (data page)

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, $n_D$ | 1.4040 at 25°C |
| - | - |
| Abbe number | ? |
| Dielectric constant, $ε_r$ | 7.52 $ε_0$ 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, $Δ_{fus}H^o$ | 8.540 kJ/mol |
| Std entropy change of fusion, $Δ_{fus}S^o$ | 51.8 J/(mol·K) |
| Std enthalpy change of vaporization, $Δ_{vap}H^o$ | 32 kJ/mol |
| Std entropy change of vaporization, $Δ_{vap}S^o$ | 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, $c_p$ | 81.65 J/(mol K) at −108.39°C |
| 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, $c_p$ | 107.4 J/(mol K) at −108.39 °C 123.9 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

Vapor pressure 143 mm Hg at 20°C

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

## Distillation data

Vapor-Liquid Equilibrium of Tetrahydrofuran/Ethanol P = 100 kPa :

| BP Temp. °C | % by mole THF | % by mole THF |
| - | - | - |
| BP Temp. °C | 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 :

| $λ_{max}$ | ? nm |
| - | - |
| Extinction coefficient, ε | ? |
| IR ||
| Major absorption bands | ? $cm^{−1}$ |
| NMR ||
| Proton NMR | |
| Carbon-13 NMR | |
| Other NMR data | |
| MS ||
| Masses of main fragments | |

* view
* Except where noted otherwise, data relate to Standard temperature and pressure.
* Reliability of data general note.
