Ethylene

• Formula: C₂H₄
• Molecular weight: 28.0532
• IUPAC Standard InChI: InChI=1S/C2H4/c1-2/h1-2H2 Copy

  
• IUPAC Standard InChIKey: VGGSQFUCUMXWEO-UHFFFAOYSA-N Copy
• CAS Registry Number: 74-85-1
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
  View 3d structure (requires JavaScript / HTML 5)
• Isotopologues:
  • (Z)-Ethylene-1,2-d2
• Other names: Ethene; Acetene; Bicarburretted hydrogen; Elayl; Olefiant gas; C2H4; Athylen; Liquid ethyene; UN 1038; UN 1962
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Condensed phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data (reactions 1 to 50)
  • Henry's Law data
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Reaction thermochemistry data: reactions 51 to 54
  • Gas phase ion energetics data
  • Ion clustering data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • UV/Visible spectrum
  • Vibrational and/or electronic energy levels
  • Gas Chromatography
  • 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
• Options:
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Condensed phase thermochemistry data

Go To: Top, Phase change data, Reaction thermochemistry data, Henry's Law data, References, Notes

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

Phase change data

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

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

Data compiled as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
DH - Eugene S. Domalski and Elizabeth D. Hearing
AC - William E. Acree, Jr., James S. Chickos

Enthalpy of vaporization

Entropy of vaporization

Antoine Equation Parameters

log₁₀(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

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Enthalpy of sublimation

Enthalpy of fusion

Entropy of fusion

Reaction thermochemistry data

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

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

Data compiled as indicated in comments:
B - John E. Bartmess
MS - José A. Martinho Simões
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
RCD - Robert C. Dunbar
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Reactions 1 to 50

C₂H₃^- +  =

By formula: C₂H₃^- + H⁺ = C₂H₄

C₇H₄CrO₅ (g) = C₅CrO₅ (g) +  (g)

By formula: C₇H₄CrO₅ (g) = C₅CrO₅ (g) + C₂H₄ (g)

 +  = ( • )

By formula: Ag⁺ + C₂H₄ = (Ag⁺ • C₂H₄)

Free energy of reaction

 +  = ( • )

By formula: H₄N⁺ + C₂H₄ = (H₄N⁺ • C₂H₄)

Free energy of reaction

 +  = ( • )

By formula: Co⁺ + C₂H₄ = (Co⁺ • C₂H₄)

Enthalpy of reaction

=  + 

By formula: C₂H₅Cl = C₂H₄ + HCl

 +  = ( • )

By formula: Cr⁺ + C₂H₄ = (Cr⁺ • C₂H₄)

Enthalpy of reaction

 +  = ( • )

By formula: Ni⁺ + C₂H₄ = (Ni⁺ • C₂H₄)

Enthalpy of reaction

 +  = ( • )

By formula: Cu⁺ + C₂H₄ = (Cu⁺ • C₂H₄)

Enthalpy of reaction

 +  = ( • )

By formula: Sc⁺ + C₂H₄ = (Sc⁺ • C₂H₄)

Enthalpy of reaction

 +  = ( • )

By formula: La⁺ + C₂H₄ = (La⁺ • C₂H₄)

Enthalpy of reaction

 +  = ( • )

By formula: Y⁺ + C₂H₄ = (Y⁺ • C₂H₄)

Enthalpy of reaction

 +  = ( • )

By formula: Ti⁺ + C₂H₄ = (Ti⁺ • C₂H₄)

Enthalpy of reaction

 +  = ( • )

By formula: V⁺ + C₂H₄ = (V⁺ • C₂H₄)

Enthalpy of reaction

 +  = ( • )

By formula: Fe⁺ + C₂H₄ = (Fe⁺ • C₂H₄)

Enthalpy of reaction

 +  =

By formula: C₂H₄ + Br₂ = C₂H₄Br₂

 +  =

By formula: C₂H₄ + I₂ = C₂H₄I₂

( • ) +  = ( • 2)

By formula: (Ag⁺ • C₂H₄) + C₂H₄ = (Ag⁺ • 2C₂H₄)

 +  =

By formula: H₂ + C₂H₄ = C₂H₆

=  + 

By formula: C₂H₅Br = HBr + C₂H₄

C₃H₉Si⁺ +  = (C₃H₉Si⁺ • )

By formula: C₃H₉Si⁺ + C₂H₄ = (C₃H₉Si⁺ • C₂H₄)

C₂H₄⁺ +  = (C₂H₄⁺ • )

By formula: C₂H₄⁺ + C₂H₄ = (C₂H₄⁺ • C₂H₄)

C₆H₄FeO₄ (l) = 4 (g) +  (cr) +  (g)

By formula: C₆H₄FeO₄ (l) = 4CO (g) + Fe (cr) + C₂H₄ (g)

=  + 

By formula: C₈H₁₂ = C₆H₈ + C₂H₄

 +  = ( • )

By formula: F^- + C₂H₄ = (F^- • C₂H₄)

Rh⁺ +  = (Rh⁺ • )

By formula: Rh⁺ + C₂H₄ = (Rh⁺ • C₂H₄)

Enthalpy of reaction

C₇H₉Cl₂NPd (solution) +  (l) = (PdCl₂(C₅H₅N)₂) (solution) +  (solution)

By formula: C₇H₉Cl₂NPd (solution) + C₄H₄N₂ (l) = (PdCl₂(C₅H₅N)₂) (solution) + C₂H₄ (solution)

 (solution) +  (solution) = C₁₃H₁₉O₂Rh (solution) + 2 (solution)

By formula: C₉H₁₅O₂Rh (solution) + C₈H₁₂ (solution) = C₁₃H₁₉O₂Rh (solution) + 2C₂H₄ (solution)

 (g) + C₂H₃BrMg (solution) =  (solution) + Br₂Mg (solution)

By formula: HBr (g) + C₂H₃BrMg (solution) = C₂H₄ (solution) + Br₂Mg (solution)

C₆HCrO₆⁺ +  = (C₆HCrO₆⁺ • )

By formula: C₆HCrO₆⁺ + C₂H₄ = (C₆HCrO₆⁺ • C₂H₄)

 +  = ( • )

By formula: Al⁺ + C₂H₄ = (Al⁺ • C₂H₄)

(CAS Reg. No. 25013-41-6 • 4294967295) +  = CAS Reg. No. 25013-41-6

By formula: (CAS Reg. No. 25013-41-6 • 4294967295C₂H₄) + C₂H₄ = CAS Reg. No. 25013-41-6

 +  =  + 

By formula: H₂ + C₂H₃Cl = C₂H₄ + HCl

 +  =

By formula: C₂H₄ + Cl₂ = C₂H₄Cl₂

=  +  + 

By formula: C₂H₄ClI = I + Cl + C₂H₄

(C₂H₄⁺ • ) +  = (C₂H₄⁺ • 2)

By formula: (C₂H₄⁺ • C₂H₄) + C₂H₄ = (C₂H₄⁺ • 2C₂H₄)

C₁₂H₁₄Mo (cr) +  (cr) = C₁₀H₁₀I₂Mo (cr) +  (g)

By formula: C₁₂H₁₄Mo (cr) + I₂ (cr) = C₁₀H₁₀I₂Mo (cr) + C₂H₄ (g)

 (cr) + 2 (g) =  (cr) + 2 (g)

By formula: C₉H₁₅O₂Rh (cr) + 2CO (g) = C₇H₇O₄Rh (cr) + 2C₂H₄ (g)

C₉H₁₅IrO₂ (cr) + 2 (g) = C₇H₇IrO₄ (cr) + 2 (g)

By formula: C₉H₁₅IrO₂ (cr) + 2CO (g) = C₇H₇IrO₄ (cr) + 2C₂H₄ (g)

( • ) +  = ( • 2)

By formula: (Fe⁺ • C₂H₄) + C₂H₄ = (Fe⁺ • 2C₂H₄)

( • ) +  = ( • 2)

By formula: (Cr⁺ • C₂H₄) + C₂H₄ = (Cr⁺ • 2C₂H₄)

( • ) +  = ( • 2)

By formula: (Mn⁺ • C₂H₄) + C₂H₄ = (Mn⁺ • 2C₂H₄)

( • ) +  = ( • 2)

By formula: (V⁺ • C₂H₄) + C₂H₄ = (V⁺ • 2C₂H₄)

( • ) +  = ( • 2)

By formula: (Ni⁺ • C₂H₄) + C₂H₄ = (Ni⁺ • 2C₂H₄)

( • ) +  = ( • 2)

By formula: (Co⁺ • C₂H₄) + C₂H₄ = (Co⁺ • 2C₂H₄)

( • ) +  = ( • 2)

By formula: (Cu⁺ • C₂H₄) + C₂H₄ = (Cu⁺ • 2C₂H₄)

=  + 

By formula: C₇H₁₀ = C₅H₆ + C₂H₄

2 =

By formula: 2C₂H₄ = C₄H₈

=  + 

By formula: C₂H₄I₂ = C₂H₄ + I₂

 +  =

By formula: C₄H₈ + C₂H₄ = C₆H₁₂

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)

References

Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Notes

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

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Holm, 1981
Holm, T., J. Chem. Soc., Perkin Trans. II, 1981, 464.. [all data]

Hop and McMahon, 1991
Hop, C.E.C.A.; McMahon, T.B., High Pressure Mass Spectrometric Observation of Metal Carbonyl Alkyl Adduct Ions of Novel Structure, Inorg. Chem., 1991, 30, 13, 2828, https://doi.org/10.1021/ic00013a025 . [all data]

Stockigt, Schwarz, et al., 1996
Stockigt, D.; Schwarz, J.; Schwarz, H., Theoretical and Experimental Studies on the Bond Dissociation Energies of Al(methane)+, Al(acetylene)+, Al(ethene)+, and Al(ethane)+, J. Phys. Chem., 1996, 100, 21, 8786, https://doi.org/10.1021/jp960060k . [all data]

Lacher, Kianpour, et al., 1956
Lacher, J.R.; Kianpour, A.; Oetting, F.; Park, J.D., Reaction calorimetry. The hydrogenation of organic fluorides and chlorides, Trans. Faraday Soc., 1956, 52, 1500-1508. [all data]

Minton, Felder, et al., 1984
Minton, T.K.; Felder, P.; Brudzynski, R.J.; Lee, Y.T., Photodissociation of 1,2-chloroiodoethane at 248 and 266 nm: The enthalpy of formation of CH₂ClCH₂I, J. Chem. Phys., 1984, 81, 1759-1769. [all data]

Calhorda, Carrondo, et al., 1991
Calhorda, M.J.; Carrondo, M.A.A.F.C.T.; Dias, A.R.; Galvão, A.M.; Garcia, M.H.; Martins, A.M.; Minas da Piedade, M.E.; Pinheiro, C.I.; Romão, C.C.; Martinho Simões, J.A.; Veiros, L.F., Organometallics, 1991, 10, 483. [all data]

Jesse, Baks, et al., 1978
Jesse, A.C.; Baks, A.; Stufkens, D.J.; Vrieze, K., Inorg. Chim. Acta, 1978, 29, 177. [all data]

Walsh and Wells, 1976
Walsh, R.; Wells, J.M., The enthalpy of formation and thermodynamic functions of bicyclo[2,2,1]hept-2-ene, J. Chem. Thermodyn., 1976, 8, 55-60. [all data]

Quick, Knecht, et al., 1972
Quick, L.M.; Knecht, D.A.; Back, M.H., Kinetics of the formation of cyclobutane from ethylene, Int. J. Chem. Kinet., 1972, 4, 61-68. [all data]

Benson and Amano, 1962
Benson, S.W.; Amano, A., Thermodynamics of iodine addition to ethylene, propylene, and cyclopropane, J. Chem. Phys., 1962, 36, 3464-3471. [all data]

Scacchi and Back, 1977
Scacchi, G.; Back, M.H., The cycloaddition of ethylene to butene-2. II. Energy relations, Int. J. Chem. Kinet., 1977, 9, 525-534. [all data]

Notes

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• Symbols used in this document:
  

  Cp,liquid	Constant pressure heat capacity of liquid
  Pc	Critical pressure
  Ptriple	Triple point pressure
  S°liquid	Entropy of liquid at standard conditions
  T	Temperature
  Tboil	Boiling point
  Tc	Critical temperature
  Tfus	Fusion (melting) point
  Ttriple	Triple point temperature
  Vc	Critical volume
  d(ln(kH))/d(1/T)	Temperature dependence parameter for Henry's Law constant
  k°H	Henry's Law constant at 298.15K
  ΔfusH	Enthalpy of fusion
  ΔfusS	Entropy of fusion
  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔrS°	Entropy of reaction at standard conditions
  ΔsubH	Enthalpy of sublimation
  ΔvapH	Enthalpy of vaporization
  ΔvapS	Entropy of vaporization
  ρc	Critical density

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