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,[1] nD	1.5055 at 20 °C
Abbe number	?
Dielectric constant,[2] εr	2.5 ε0 at 21 °C
Bond strength	?
Bond length	?
Bond angle	?
Magnetic susceptibility	?
Surface tension[3]	31.74 dyn/cm at 20 °C(C2Cl4 against air) 44.4 dyn/cm at 25 °C (C2Cl4 against water)
Viscosity[4]	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, ΔfusHo	10.88 kJ/mol
Std entropy change of fusion, ΔfusSo	43.38 J/(mol·K)
Std enthalpy change of vaporization, ΔvapHo	34.68 kJ/mol at 121 °C
Std entropy change of vaporization, ΔvapSo	102.8 J/(mol·K) at 25 °C
Solid properties
Std enthalpy change of formation, ΔfHosolid	? kJ/mol
Standard molar entropy, Sosolid	? J/(mol K)
Enthalpy of state transition, ΔtrsHo	0.820 kJ/mol (crystal II → crystal I) –148 °C to –63 °C
Entropy of state transition, ΔtrsSo	5.26 J/(mol K) (crystal II → crystal I) –148 °C to –63 °C
Heat capacity, cp	? J/(mol K)
Liquid properties
Std enthalpy change of formation, ΔfHoliquid	–54.4 kJ/mol	Standard enthalpy of Formation (gas)	-12.4 kJ/mol
Standard molar entropy, Soliquid	240.6 J/(mol K)
Enthalpy of combustion, ΔcHo	–830 kJ/mol
Heat capacity, cp	146 J/(mol K) at 25 °C
Gas properties
Std enthalpy change of formation, ΔfHogas	–12.43 kJ/mol
Standard molar entropy, Sogas	343.4 J/(mol K) at 25 °C
Heat capacity, cp	95.51 J/(mol K) at 25 °C

Vapor pressure of liquid

P in mm Hg		1	10	40	100	400	760
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.

log₁₀ of Tetrachloroethylene vapor pressure. Uses formula: ${\displaystyle \scriptstyle \log _{e}P_{mmHg}=}$${\displaystyle \scriptstyle \log _{e}({\frac {760}{101.325}})-6.665868\log _{e}(T+273.15)-{\frac {6530.97}{T+273.15}}+60.47398+3.522382\times 10^{-6}(T+273.15)^{2}}$ obtained from CHERIC^[5]

Distillation data

See also

• Trichloroethylene (data page)

Vapor-Liquid Equilibrium of Tetrachloroethylene/Methanol[6] P = 760 mm Hg BP Temp. °C  % by mole methanol 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[6] P = 760 mm Hg BP Temp. °C  % by mole dichloroethane 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[6] P = 100 kPa BP Temp. °C  % by mole C2Cl4 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
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

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