Ethylene
- Formula: C2H4
- Molecular weight: 28.0532
- IUPAC Standard InChI: InChI=1S/C2H4/c1-2/h1-2H2
- IUPAC Standard InChIKey: VGGSQFUCUMXWEO-UHFFFAOYSA-N
- 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
The 3d structure may be viewed using Java or Javascript. - Isotopologues:
- 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:
- Other data available:
- Gas phase thermochemistry data
- Condensed phase thermochemistry data
- Phase change data
- Reaction thermochemistry data: reactions 1 to 50, reactions 51 to 54
- Henry's Law data
- 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:
- Options:
Data at NIST subscription sites:
- NIST / TRC Web Thermo Tables, "lite" edition (thermophysical and thermochemical data)
- NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)
NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.
Critical temperature
Go To: Top, 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
| Tc (K) | Reference | Comment |
|---|---|---|
| 282.34 ± 0.02 | Tsonopoulos and Ambrose, 1996 | |
| 282.33 | Brunner, 1987 | Uncertainty assigned by TRC = 0.02 K; Visual, optical cell 30cm high. TE cal. vs PRT; TRC |
| 282.35 | Jahangiri, Jacobsen, et al., 1986 | Uncertainty assigned by TRC = 0.02 K; TRC |
| 282.33 | Brunner, 1985 | Uncertainty assigned by TRC = 0.1 K; Visual, optical cell 30cm high. TE cal. vs PRT,; TRC |
| 282.34 | Jahangiri, 1984 | Uncertainty assigned by TRC = 0.002 K; TRC |
| 282.34 | Hastings, Levelt Sengers, et al., 1980 | Uncertainty assigned by TRC = 0.0017 K; PVT, Burnett apparatus, quartz therm. cal. vs PRT, IPTS-68, PP. Unct. value one standard deviation from fitting.; TRC |
| 282.35 | Douslin and Harrison, 1976 | Uncertainty assigned by TRC = 0.03 K; TRC |
| 282.65 | Angus, Armstrong, et al., 1974 | Uncertainty assigned by TRC = 0.25 K; TRC |
| 282.69 | Shim and Kohn, 1964 | Uncertainty assigned by TRC = 0.3 K; TRC |
| 283.1 | Maass and Wright, 1921 | Uncertainty assigned by TRC = 0.6 K; TRC |
References
Go To: Top, Critical temperature, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Tsonopoulos and Ambrose, 1996
Tsonopoulos, C.; Ambrose, D.,
Vapor-Liquid Critical Properties of Elements and Compounds. 6. Unsaturated Aliphatic Hydrocarbons,
J. Chem. Eng. Data, 1996, 41, 645-656. [all data]
Brunner, 1987
Brunner, E.,
Fluid mixtures at high pressures VI. Phase separation and critical phenomina in 18 binary mixtures containing either pyridine or ethanoic acid,
J. Chem. Thermodyn., 1987, 19, 823. [all data]
Jahangiri, Jacobsen, et al., 1986
Jahangiri, M.; Jacobsen, R.T.; Stewart, R.B.; McCarty, R.D.,
Thermodynamic Properties of Ethylene from the Freezing Line to 450 K at Pressures to 260 MPa,
J. Phys. Chem. Ref. Data, 1986, 15, 593. [all data]
Brunner, 1985
Brunner, E.,
Fluid mixtures at high pressures II. Phase separation and critical phenomena of (ethane + an n-alkanol) and of (ethene + methanol) and (propane + methanol),
J. Chem. Thermodyn., 1985, 17, 871. [all data]
Jahangiri, 1984
Jahangiri, M.,
A thermodynamic property formulation for ethylene from the freezing line to 450 K at pressures to 260 MPa, Ph.D. Thesis, Univ. Idaho, Moscow, 1984. [all data]
Hastings, Levelt Sengers, et al., 1980
Hastings, J.R.; Levelt Sengers, J.M.H.; Balfour, F.W.,
The critical=region equation of state of ethene and the effect of small impurities,
J. Chem. Thermodyn., 1980, 12, 1009-45. [all data]
Douslin and Harrison, 1976
Douslin, D.R.; Harrison, R.H.,
Pressure, Volume, Temperature Relations of Ethylene,
J. Chem. Thermodyn., 1976, 8, 301-330. [all data]
Angus, Armstrong, et al., 1974
Angus, S.; Armstrong, B.; de Reuck, K.M.,
International Thermodynamic Tables of the Fluid State - 2 Ethylene, Butterworths, London, 1974. [all data]
Shim and Kohn, 1964
Shim, J.; Kohn, J.P.,
Vapor-Liquid Equil. Relations in Binary Sys. Ethylene-Chloroform Sys. system,
J. Chem. Eng. Data, 1964, 9, 1-2. [all data]
Maass and Wright, 1921
Maass, O.; Wright, C.H.,
SOME PHYSICAL PROPERTIES OF HYDROCARBONS CONTAINING TWO AND THREE CARBON ATOMS.,
J. Am. Chem. Soc., 1921, 43, 5, 1098-1111, https://doi.org/10.1021/ja01438a013
. [all data]
Notes
Go To: Top, Critical temperature, References
- Symbols used in this document:
Tc Critical temperature - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.