This page provides supplementary chemical data on ethane.
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.
Structure and properties | |
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Index of refraction, nD | ? |
Abbe number | ? |
Dielectric constant, εr | ? ε0 at ? °C |
Bond strength | ? |
Bond length | ? |
Bond angle | ? |
Magnetic susceptibility | ? |
Surface tension | 21.16 dyn/cm at −119.9 °C |
Phase behavior | |
---|---|
Triple point | 91 K (−182 °C), 1.1 Pa |
Critical point | 305.3 K (32.2 °C), 4.9 MPa |
Std enthalpy change of fusion, ΔfusH |
9.76 kJ/mol at −182 °C |
Std entropy change of fusion, ΔfusS |
6.46 J/(mol·K) at −182 °C |
Std enthalpy change of vaporization, ΔvapH crystal I → liquid |
14.703 kJ/mol at −89.0 °C |
Std entropy change of vaporization, ΔvapS crystal I → liquid |
79.87 J/(mol·K) at −89.0 °C |
Std enthalpy change of state transition, ΔtrsH crystal II → crystal I |
2.282 kJ/mol at −183.3 °C |
Std entropy change of state transition, ΔtrsS crystal II → crystal I |
25.48 kJ/mol at −183.3 °C |
Solid properties | |
Std enthalpy change of formation, ΔfH |
? kJ/mol |
Standard molar entropy, S |
? J/(mol K) |
Heat capacity, cp | ? J/(mol K) |
Liquid properties | |
Std enthalpy change of formation, ΔfH |
? kJ/mol |
Standard molar entropy, S |
126.7 J/(mol K) |
Heat capacity, cp | 68.5 J/(mol K) at −179 °C |
Gas properties | |
Std enthalpy change of formation, ΔfH |
−83.8 kJ/mol |
Standard molar entropy, S |
229.6 J/(mol K) |
Enthalpy of combustion, ΔcH |
−1560.7 kJ/mol |
Heat capacity, cp | 52.49 J/(mol K) at 25 °C |
van der Waals' constants [1] | a = 556.2 L2 kPa/mol2 b = 0.06380 L/mol |
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.
Mean value for acceptable data: −183.01 °C (90.14 K).
Sources used, from ONS Open Melting Point Collection: [3]
Values considered "outliers", not included in averaging:
UV-Vis | |
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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 |