Ethane (data page)

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Template:Short description Template:Use dmy dates

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 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

Template:Chembox header | Structure and properties
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

Thermodynamic properties

Template:Chembox header | 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, ΔfusHo 		9.76 kJ/mol at −182 °C
Std entropy change
of fusion, ΔfusSo 		6.46 J/(mol·K) at −182 °C
Std enthalpy change
of vaporization, ΔvapHo
crystal I → liquid 		14.703 kJ/mol at −89.0 °C
Std entropy change
of vaporization, ΔvapSo
crystal I → liquid 		79.87 J/(mol·K) at −89.0 °C
Std enthalpy change
of state transition, ΔtrsHo
crystal II → crystal I 		2.282 kJ/mol at −183.3 °C
Std entropy change
of state transition, ΔtrsSo
crystal II → crystal I 		25.48 kJ/mol at −183.3 °C
Template:Chembox header | Solid properties
Std enthalpy change
of formation, ΔfHosolid 		? kJ/mol
Standard molar entropy,
Sosolid 		? J/(mol K)
Heat capacity, cp ? J/(mol K)
Template:Chembox header | Liquid properties
Std enthalpy change
of formation, ΔfHoliquid 		? kJ/mol
Standard molar entropy,
Soliquid 		126.7 J/(mol K)
Heat capacity, cp 68.5 J/(mol K) at −179 °C
Template:Chembox header | Gas properties
Std enthalpy change
of 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' constants[1] a = 556.2 L2 kPa/mol2
b = 0.06380 L/mol

Vapor pressure of liquid

Template:Chembox header | P in mm Hg 1 10 40 100 400 760 1520 3800 7600 15200 30400 45600
Template:Chembox header | 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.

Ethane vapor pressure vs. temperature. Uses formula ln⁡Pmm Hg=ln⁡760101.325−5.381564ln⁡T−2626.728T+46.39131+1.601858×10−05T2 (with T in kelvins) obtained from CHERIC[2]

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Melting point data

Mean value for acceptable data: −183.01 °C (90.14 K).

Sources used, from ONS Open Melting Point Collection:[3]

  • −183.33 °C[4]
  • −182.85 °C from CHERIC[5]
  • −182.78 °C[6]
  • −182.79 °C from PHYSPROP[7]
  • −183.28 °C[8]

Values considered "outliers", not included in averaging:

  • −172 °C from Oxford MSDS[9]
  • −172.15 °C[10]

Spectral data

Template:Chembox header | UV-Vis
λmax ? nm
Extinction coefficient, ε ?
Template:Chembox header | IR
Major absorption bands ? cm−1
Template:Chembox header | NMR
Proton NMR  
Carbon-13 NMR  
Other NMR data  
Template:Chembox header | MS
Masses of
main fragments 		 

References

  1. ↑ Lange's Handbook of Chemistry 10th ed, pp. 1522–1524
  2. ↑ Template:Cite web
  3. ↑ Template:Cite journal
  4. ↑ Template:Cite journal
  5. ↑ Template:Cite web
  6. ↑ Template:Cite journal
  7. ↑ Template:Cite web
  8. ↑ Template:Cite journal
  9. ↑ Template:Cite web
  10. ↑ Template:Cite journal

Template:Chemical data page general note

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