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,Lange's Handbook of Chemistry, 10th ed. pp 1356 nD 1.5055 at 20 °C Abbe number38.67Optical constants of C2Cl4 (Tetrachloroethylene, PCE, PERC) Refractive Index Database Dielectric constant, εr 2.5 ε0 at 21 °C Bond strength 78 kcal/mol (C–Cl)Properties of C2Cl4. webQC Bond length 1.354 Å (C=C), 1.718 Å (C–Cl)Experimental data for C2Cl4 (Tetrachloroethylene) Computational Chemistry Comparison and Benchmark DataBase. Bond angle 115.7° (Cl–C–Cl), 122.15° (C=C–Cl) Magnetic susceptibility Haynes, William M. (2017). "Diamagnetic Susceptibility of Selected Organic Compounds". CRC Handbook of Chemistry and Physics (97th ed.). Florida, USA: CRC Press, Taylor & Francis Group. p. 3-579. Surface tension 31.74 dyn/cm at 20 °C(C2Cl4 against air)44.4 dyn/cm at 25 °C (C2Cl4 against water) ViscosityLange's Handbook of Chemistry, 10th ed. pp 1661 1.1384 mPa·sec at 0.43 °C0.8759 mPa·sec at 22.3 °C0.6539 mPa·sec at 52.68 °C0.4034 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 changeof fusion, ΔfusHo 10.88 kJ/mol Std entropy changeof fusion, ΔfusSo 43.38 J/(mol·K) Std enthalpy changeof vaporization, ΔvapHo 34.68 kJ/mol at 121 °C Std entropy changeof vaporization, ΔvapSo 102.8 J/(mol·K) at 25 °C Solid properties Std enthalpy changeof 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 changeof 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 changeof 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.
Distillation data See also Trichloroethylene (data page)
Vapor-Liquid Equilibriumof Tetrachloroethylene/MethanolP = 760 mm Hg BPTemp.°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 Equilibriumof Tetrachloroethylene/1,2-DichloroethaneP = 760 mm Hg BPTemp.°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 Equilibriumof Tetrachloroethylene/IsopropanolP = 100 kPa BPTemp.°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
References