Ethane

• Formula: C₂H₆
• Molecular weight: 30.0690
• IUPAC Standard InChI: InChI=1S/C2H6/c1-2/h1-2H3 Copy

  
• IUPAC Standard InChIKey: OTMSDBZUPAUEDD-UHFFFAOYSA-N Copy
• CAS Registry Number: 74-84-0
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
  The 3d structure may be viewed using Java or Javascript.
• Species with the same structure:
  • 1-Ethenyl-1-methyl-2,4-bis-(1-methylethenyl)-1S-1α,2β,4α-cyclohexane
• Isotopologues:
  • pentadeuteroethane
  • Ethane-d1
• Other names: Bimethyl; Dimethyl; Ethyl hydride; Methylmethane; C2H6; UN 1035; UN 1961
• Information on this page:
  • Condensed phase thermochemistry data
  • Henry's Law data
  • IR Spectrum
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • Ion clustering data
  • Mass spectrum (electron ionization)
  • Vibrational and/or electronic energy levels
  • Fluid Properties
• Data at other public NIST sites:
  • Microwave spectra (on physics lab web site)
  • Electron-Impact Ionization Cross Sections (on physics web site)
  • Gas Phase Kinetics Database
  • Reference simulation
• Options:
  • Switch to SI units

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• NIST / TRC Web Thermo Tables, "lite" edition (thermophysical and thermochemical data)
• NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)

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Condensed phase thermochemistry data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Eugene S. Domalski and Elizabeth D. Hearing

Constant pressure heat capacity of liquid

Henry's Law data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Rolf Sander

Henry's Law constant (water solution)

k_H(T) = k°_H exp(d(ln(k_H))/d(1/T) ((1/T) - 1/(298.15 K)))
k°_H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(k_H))/d(1/T) = Temperature dependence constant (K)

IR Spectrum

Go To: Top, Condensed phase thermochemistry data, Henry's Law data, References, Notes

Data compiled by: Coblentz Society, Inc.

• GAS (150 mmHg DILUTED TO A TOTAL PRESSURE OF 600 mmHg WITH N2) NOTE: High partial pressure may produce unreliable values in the range of 2700 to 3300 cm-1; see scan of original spectrum.; DOW KBr FOREPRISM; DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 4 cm^-1 resolution

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

• gas

References

Go To: Top, Condensed phase thermochemistry data, Henry's Law data, IR Spectrum, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Witt and Kemp, 1937
Witt, R.K.; Kemp, J.D., The heat capacity of ethane from 15°K to the boiling point. The heat of fusion and the heat of vaporization, J. Am. Chem. Soc., 1937, 59, 273-276. [all data]

Atake and Chihara, 1976
Atake, T.; Chihara, H., Calorimetric study of the phase changes in solid ethane, Chem. Lett., 1976, (7), 683-688. [all data]

Roder, 1976
Roder, H.M., The heats of transition of solid ethane, J. Chem. Phys., 1976, 65, 1371-1373. [all data]

Roder, 1976, 2
Roder, H.M., Measurements of the specific heats, Ca, and Cv, of dense gaseous and liquid ethane, J. Res., 1976, NBS 80A, 739-759. [all data]

Wiebe, Hubbard, et al., 1930
Wiebe, R.; Hubbard, K.H.; Brevoort, M.J., The heat capacity of saturated liquid ethane from the boiling point to the critical temperature and heat fusion of the solid, J. Am. Chem. Soc., 1930, 52, 611-622. [all data]

Notes

Go To: Top, Condensed phase thermochemistry data, Henry's Law data, IR Spectrum, References

• Symbols used in this document:
  

  Cp,liquid	Constant pressure heat capacity of liquid
  S°liquid	Entropy of liquid at standard conditions
  d(ln(kH))/d(1/T)	Temperature dependence parameter for Henry's Law constant
  k°H	Henry's Law constant at 298.15K

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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