Ethane (data page)

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This page provides supplementary chemical data on ethane.

Material Safety Data Sheet[edit]

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[edit]

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[edit]

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
Solid properties
Std enthalpy change
of formation
, ΔfHosolid
 ? kJ/mol
Standard molar entropy,
Sosolid
 ? J/(mol K)
Heat capacity, cp  ? J/(mol K)
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
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 liter per mole

Vapor pressure of liquid[edit]

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.

log10 of Ethane vapor pressure. Uses formula obtained from CHERIC[2]

Melting point data[edit]

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[edit]

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[edit]

  1. ^ Lange's Handbook of Chemistry 10th ed, pp 1522-1524
  2. ^ "Pure Component Properties" (Queriable database). Chemical Engineering Research Information Center. Retrieved 8 May 2007. 
  3. ^ "ONS Open Melting Point Collection". 2011. doi:10.1038/npre.2011.6229.1. 
  4. ^ Burnett, Lowell J.; Muller, Burton H. (1970). "Melting points of ethane and three of its deuterated modifications". J. Chem. Eng. Data. 15 (1): 154–157. doi:10.1021/je60044a013. 
  5. ^ "CHERIC" (Queriable database). Chemical Engineering Research Information Center. Retrieved 25 August 2011. 
  6. ^ Givens, F. L.; McCormick, W. D. (1977). "Proton magnetic resonance line shape measurements in solid ethane". J. Chem. Phys. 67: 1150–6. doi:10.1063/1.434967. 
  7. ^ "PHYSPROP" (Queriable database). SRC, Inc. (Syracuse Research Corporation). Retrieved 25 August 2011. 
  8. ^ Witt, R. K.; Kemp, J. D. (1937). "The Heat Capacity of Ethane from 15°K. to the Boiling Point. The Heat of Fusion and the Heat of Vaporization". 59 (2): 273–276. doi:10.1021/ja01281a013. 
  9. ^ "Safety data for ethane" (Queriable database). Oxford University. Retrieved 25 August 2011. 
  10. ^ Streng, A. G. (1971). "Miscibility and compatibility of some liquefied and solidified gases at low temperatures". J. Chem. Eng. Data. 16 (3): 357–359. doi:10.1021/je60050a024. 

Except where noted otherwise, data relate to standard ambient temperature and pressure.

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