# Tetrachloroethylene (data page)

This page provides supplementary chemical data on tetrachloroethylene.

## Material Safety Data Sheet

The handling of this chemical may incur notable safety precautions. It is highly recommended 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 from Fisher Scientific.

## Structure and properties

Structure and properties :
| Index of refraction, n$_D$ | 1.5055 at 20 °C |
| Abbe number | ? |
| Dielectric constant, ε$_r$ | 2.5 ε$_0$ at 21 °C |
| Bond strength | ? |
| Bond length | ? |
| Bond angle | ? |
| Magnetic susceptibility | ? |
| Surface tension | 31.74 dyn/cm at 20 °C(C$_2$Cl$_4$ against air) 44.4 dyn/cm at 25 °C (C$_2$Cl$_4$ against water) |
| Viscosity | 1.1384 mPa·sec at 0.43 °C 0.8759 mPa·sec at 22.3 °C 0.6539 mPa·sec at 52.68 °C 0.4043 mPa·sec at 117.09 °C |

## Thermodynamic properties

Phase behavior :
| Triple point | 250.81 K (–22.34 °C), ? Pa |
| Critical point | 620 K (347 °C), 4760 kPa |
| Std enthalpy change of fusion, Δ$_{fus}$H$^o$ | 10.88 kJ/mol |
| Std entropy change of fusion, Δ$_{fus}$S$^o$ | 43.38 J/(mol·K) |
| Std enthalpy change of vaporization, Δ$_{vap}$H$^o$ | 34.68 kJ/mol at 121 °C |
| Std entropy change of vaporization, Δ$_{vap}$S$^o$ | 102.8 J/(mol·K) at 25 °C |
| Solid properties ||
| Std enthalpy change of formation, Δ$_f$H$^o$$_{solid}$ | ? kJ/mol |
| Standard molar entropy, S$^o$$_{solid}$ | ? J/(mol K) |
| Enthalpy of state transition, Δ$_{trs}$H$^o$ | 0.820 kJ/mol (crystal II → crystal I) –148 °C to –63 °C |
| Entropy of state transition, Δ$_{trs}$S$^o$ | 5.26 J/(mol K) (crystal II → crystal I) –148 °C to –63 °C |
| Heat capacity, c$_p$ | ? J/(mol K) |
| Liquid properties ||
| Std enthalpy change of formation, Δ$_f$H$^o$$_{liquid}$ | –54.4 kJ/mol | Standard enthalpy of Formation (gas) | -12.4 kJ/mol |
| Standard molar entropy, S$^o$$_{liquid}$ | 240.6 J/(mol K) |
| Enthalpy of combustion, Δ$_c$H$^o$ | –830 kJ/mol |
| Heat capacity, c$_p$ | 146 J/(mol K) at 25 °C |
| Gas properties ||
| Std enthalpy change of formation, Δ$_f$H$^o$$_{gas}$ | –12.43 kJ/mol |
| Standard molar entropy, S$^o$$_{gas}$ | 343.4 J/(mol K) at 25 °C |
| Heat capacity, c$_p$ | 95.51 J/(mol K) at 25 °C |

## Vapor pressure of liquid

| P in mm Hg | P in mm Hg | 1 | 10 | 40 | 100 | 400 | 760 |
| T in °C | T in °C | –20.6$_{(s)}$ | 13.8 | 40.1 | 61.3 | 100.0 | 120.8 |
Table data obtained from CRC Handbook of Chemistry and Physics 47th ed. Note that "(s)" annotation indicates equilibrium temperature of vapor pressure of solid. Otherwise indication is equilibrium temperature of vapor of liquid.

## Distillation data

See also
* Trichloroethylene (data page)
Vapor-Liquid Equilibrium of Tetrachloroethylene/Methanol P = 760 mm Hg :
| BP Temp. °C | % by mole methanol | % by mole methanol |
| BP Temp. °C | liquid | vapor |
| 117.2 | 0.1 | 7.4 |
| 113.2 | 0.3 | 21.0 |
| 107.7 | 0.3 | 33.5 |
| 102.7 | 0.3 | 44.5 |
| 97.6 | 0.8 | 53.0 |
| 93.0 | 1.1 | 58.8 |
| 87.0 | 1.7 | 66.0 |
| 80.5 | 2.4 | 72.4 |
| 70.2 | 6.6 | 80.0 |
| 65.3 | 21.5 | 83.7 |
| 64.4 | 53.3 | 84.8 |
| 63.9 | 77.6 | 85.9 |
| 63.5 | 88.3 | 88.3 |
| 63.6 | 93.7 | 91.3 |
| 63.8 | 95.0 | 92.7 |
| 64.2 | 97.9 | 95.8 |
Vapor-Liquid Equilibrium of Tetrachloroethylene/1,2-Dichloroethane P = 760 mm Hg :
| BP Temp. °C | % by mole dichloroethane | % by mole dichloroethane |
| BP Temp. °C | liquid | vapor |
| 117.8 | 2.0 | 11.5 |
| 114.0 | 5.0 | 21.7 |
| 110.9 | 9.2 | 31.5 |
| 108.0 | 12.0 | 38.8 |
| 106.0 | 15.0 | 43.7 |
| 103.3 | 20.0 | 51.2 |
| 100.5 | 26.4 | 59.2 |
| 98.5 | 31.1 | 62.9 |
| 95.2 | 40.0 | 69.6 |
| 93.7 | 45.0 | 72.5 |
| 92.2 | 50.0 | 75.5 |
| 89.9 | 59.4 | 80.4 |
| 88.2 | 67.9 | 84.2 |
| 86.8 | 75.0 | 87.5 |
| 85.5 | 83.8 | 91.6 |
| 84.2 | 93.8 | 97.0 |
Vapor-Liquid Equilibrium of Tetrachloroethylene/Isopropanol P = 100 kPa :
| BP Temp. °C | % by mole C$_2$Cl$_4$ | % by mole C$_2$Cl$_4$ |
| BP Temp. °C | liquid | vapor |
| 81.7 | 0.0 | 0.0 |
| 81.6 | 0.8 | 1.2 |
| 81.5 | 1.6 | 2.3 |
| 81.4 | 3.0 | 4.1 |
| 81.3 | 5.4 | 6.7 |
| 81.2 | 8.4 | 9.4 |
| 81.1 | 12.0 | 12.1 |
| 81.1 | 16.4 | 14.5 |
| 81.3 | 21.9 | 17.1 |
| 81.5 | 27.8 | 19.0 |
| 81.8 | 33.9 | 20.3 |
| 82.2 | 39.4 | 21.5 |
| 82.6 | 44.0 | 22.6 |
| 83.0 | 50.6 | 23.1 |
| 83.4 | 55.2 | 24.2 |
| 83.8 | 60.0 | 24.7 |
| 84.4 | 65.0 | 25.3 |
| 85.0 | 69.1 | 26.2 |
| 85.6 | 75.5 | 27.7 |
| 86.8 | 79.8 | 29.6 |
| 90.1 | 87.9 | 35.3 |
| 95.1 | 92.3 | 42.7 |
| 98.0 | 94.1 | 48.2 |
| 101.6 | 95.5 | 54.0 |
| 105.9 | 97.0 | 62.6 |
| 110.2 | 98.1 | 72.1 |
| 114.7 | 99.2 | 85.0 |
| 117.6 | 99.6 | 92.1 |
| 121.0 | 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.