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Ethylene information


"Ethene" redirects here. Not to be confused with ethane or ethyne.
Ethylene
Names
IUPAC name
Ethene
Preferred IUPAC name
Ethene[1]
Other names
R-1150
Identifiers
CAS Number
  • 74-85-1 checkY
3D model (JSmol)
  • Interactive image
Beilstein Reference
 1730731
ChEBI
  • CHEBI:18153 checkY
ChEMBL
  • ChEMBL117822 checkY
ChemSpider
  • 6085 checkY
ECHA InfoCard 100.000.742 Edit this at Wikidata
EC Number
  • 200-815-3
Gmelin Reference
 214
KEGG
  • C06547 checkY
PubChem CID
  • 6325
RTECS number
  • KU5340000
UNII
  • 91GW059KN7 checkY
UN number 1962 1038
CompTox Dashboard (EPA)
  • DTXSID1026378 Edit this at Wikidata
InChI
  • InChI=1S/C2H4/c1-2/h1-2H2 checkY
    Key: VGGSQFUCUMXWEO-UHFFFAOYSA-N checkY
  • InChI=1/C2H4/c1-2/h1-2H2
    Key: VGGSQFUCUMXWEO-UHFFFAOYAE
SMILES
  • C=C
Properties
Chemical formula
 C
2H
4
Molar mass 28.054 g·mol−1
Appearance colourless gas
Density 1.178 kg/m3 at 15 °C, gas[2]
Melting point −169.2 °C (−272.6 °F; 104.0 K)
Boiling point −103.7 °C (−154.7 °F; 169.5 K)
Solubility in water
 0.131 mg/mL (25 °C);[citation needed] 2.9 mg/L[3]
Solubility in ethanol 4.22 mg/L[3]
Solubility in diethyl ether good[3]
Acidity (pKa) 44
Conjugate acid Ethenium
Magnetic susceptibility (χ)
 -15.30·10−6 cm3/mol
Viscosity 10.28 μPa·s[4]
Structure
Molecular shape
 D2h
Dipole moment
 zero
Thermochemistry
Std molar
entropy (S⦵298)
 219.32 J·K−1·mol−1
Std enthalpy of
formation (ΔfH⦵298)
 +52.47 kJ/mol
Hazards
GHS labelling:
Pictograms
 GHS02: FlammableGHS07: Exclamation mark
Signal word
 Danger
Hazard statements
 H220, H336
Precautionary statements
 P210, P261, P271, P304+P340, P312, P377, P381, P403, P403+P233, P405, P501
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 4: Will rapidly or completely vaporize at normal atmospheric pressure and temperature, or is readily dispersed in air and will burn readily. Flash point below 23 °C (73 °F). E.g. propaneInstability 2: Undergoes violent chemical change at elevated temperatures and pressures, reacts violently with water, or may form explosive mixtures with water. E.g. white phosphorusSpecial hazards (white): no code
2
4
2
Flash point −136 °C (−213 °F; 137 K)
Autoignition
temperature
 542.8 °C (1,009.0 °F; 815.9 K)
Safety data sheet (SDS) ICSC 0475
Related compounds
Related compounds
 Ethane
Acetylene
Propene
Supplementary data page
Ethylene (data page)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)
Infobox references

Ethylene (IUPAC name: ethene) is a hydrocarbon which has the formula C2H4 or H2C=CH2. It is a colourless, flammable gas with a faint "sweet and musky" odour when pure.[6] It is the simplest alkene (a hydrocarbon with carbon–carbon double bonds).

Ethylene is widely used in the chemical industry, and its worldwide production (over 150 million tonnes in 2016[7]) exceeds that of any other organic compound.[8][9] Much of this production goes toward creating polythene, which is a widely used plastic containing polymer chains of ethylene units in various chain lengths. Production emits greenhouse gases, including methane from feedstock production and carbon dioxide from any non-sustainable energy used.

Ethylene is also an important natural plant hormone and is used in agriculture to induce ripening of fruits.[10] The hydrate of ethylene is ethanol.

  1. ^ "Ethylene". Archived from the original on 2023-10-08. Retrieved 2021-05-27.
  2. ^ Record of Ethylene in the GESTIS Substance Database of the Institute for Occupational Safety and Health, accessed on 25 October 2007.
  3. ^ a b c Neiland, O. Ya. (1990) Органическая химия: Учебник для хим. спец. вузов. Moscow. Vysshaya Shkola. p. 128.
  4. ^ Kestin J, Khalifa HE, Wakeham WA (1977). "The viscosity of five gaseous hydrocarbons". The Journal of Chemical Physics. 66 (3): 1132–1134. Bibcode:1977JChPh..66.1132K. doi:10.1063/1.434048.
  5. ^ ETHYLENE | CAMEO Chemicals | NOAA Archived 2015-04-02 at the Wayback Machine. Cameochemicals.noaa.gov. Retrieved on 2016-04-24.
  6. ^ Cite error: The named reference UllmannEthylene was invoked but never defined (see the help page).
  7. ^ Research and Markets. "The Ethylene Technology Report 2016 - Research and Markets". www.researchandmarkets.com. Archived from the original on 10 May 2020. Retrieved 19 June 2016.
  8. ^ "Production: Growth is the Norm". Chemical and Engineering News. 84 (28): 59–236. July 10, 2006. doi:10.1021/cen-v084n034.p059.
  9. ^ Propylene Production from Methanol. Intratec. 2012-05-31. ISBN 978-0-615-64811-8. Archived from the original on 2016-03-04. Retrieved 2012-09-17.
  10. ^ Wang KL, Li H, Ecker JR (2002). "Ethylene biosynthesis and signaling networks". The Plant Cell. 14 (Suppl): S131-151. doi:10.1105/tpc.001768. PMC 151252. PMID 12045274.

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