This page provides supplementary chemical data on ethane.
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.
Structure and properties
Structure and properties Surface tension 21.16 dyn/cm at −119.9 °C
Thermodynamic properties
Phase behavior Triple point 91 K (−182 °C), 1.1 Pa Std entropy changeof fusion, ΔfusSo 6.46 J/(mol·K) at −182 °C Std enthalpy changeof vaporization, ΔvapHocrystal I → liquid 14.703 kJ/mol at −89.0 °C Std entropy changeof vaporization, ΔvapSocrystal I → liquid 79.87 J/(mol·K) at −89.0 °C Std enthalpy changeof state transition, ΔtrsHocrystal II → crystal I 2.282 kJ/mol at −183.3 °C Std entropy changeof state transition, ΔtrsSocrystal II → crystal I 25.48 kJ/mol at −183.3 °C Solid properties Std enthalpy changeof formation, ΔfHosolid ? kJ/mol Standard molar entropy,Sosolid ? J/(mol K) Heat capacity, cp ? J/(mol K) Liquid properties Std enthalpy changeof formation, ΔfHoliquid ? kJ/mol Standard molar entropy,Soliquid 126.7 J/(mol K) Heat capacity, cp 68.5 J/(mol K) at −179 °C Gas properties Std enthalpy changeof formation, ΔfHogas −83.8 kJ/mol Standard molar entropy,Sogas 229.6 J/(mol K) Enthalpy of combustion, ΔcHo −1560.7 kJ/mol Heat capacity, cp 52.49 J/(mol K) at 25 °C van der Waals' constantsLange's Handbook of Chemistry 10th ed, pp. 1522–1524 a = 556.2 L2 kPa/mol2 b = 0.06380 L/mol
Vapor pressure of liquid P in mm Hg 1 10 40 100 400 760 1520 3800 7600 15200 30400 45600 T in °C −159.5 −142.9 −129.8 −119.3 −99.6 −88.6 −75.0 −52.8 −32.0 −6.4 23.6 — Table data obtained from CRC Handbook of Chemistry and Physics 44th ed.
Melting point data Mean value for acceptable data: −183.01 °C (90.14 K).
Sources used, from ONS Open Melting Point Collection: −183.33 °C −182.85 °C from CHERIC −182.78 °C −182.79 °C from PHYSPROP −183.28 °C
Values considered "outliers", not included in averaging: −172 °C from Oxford MSDS −172.15 °C
Spectral data
References