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Ethylene (IUPAC name: ethene) is a hydrocaurbon that haes the formula C
2
H
4
or H2C=CH2. It is a colourless flammable gas wi a faint "sweet an musky" odour whan pure.[4] It is the semplest alkene (a hydrocaurbon wi caurbon-caurbon dooble bonds).

Ethylene
Ethylene-CRC-MW-dimensions-2D.png
Ethylene-CRC-MW-3D-balls.png
Ethylene-3D-vdW.png
Names
IUPAC name
Ethene
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.000.742
EC Nummer 200-815-3
KEGG
UNII
Properties
C
2
H
4
Molar mass 28.05 g/mol
Appearance colourless gas
Density 1.178 kg/m3 at 15 °C, gas[1]
Meltin pynt −169.2 °C (−272.6 °F; 104.0 K)
Bylin pynt −103.7 °C (−154.7 °F; 169.5 K)
3.5 mg/100 mL (17 °C);[citation needit] 2.9 mg/L[2]
Solubility in ethanol 4.22 mg/L[2]
Solubility in diethyl ether guid[2]
Acidity (pKa) 44
Magnetic susceptibility -15.30·10−6 cm3/mol
Structur
Molecular shape D2h
zero
Thermochemistry
Staundart molar
entropy
So298
219.32 J·K−1·mol−1
Std enthalpy o
formation
ΔfHo298
+52.47 kJ/mol
Hazards
Safety data sheet ICSC 0475
EU clessification Flammable F+
R-phrases R12 R67
S-phrases (S2) S9 S16 S33 S46
NFPA 704
Flammability code 4: Will rapidly or completely vaporize at normal atmospheric pressur an temperatur, or is readily dispersed in air an will burn readily. Flash pynt ablo 23 °C (73 °F). E.g., propaneHealth code 2: Intense or continued but nae chronic exposure could cause temporary incapacitation or possible residual injury. E.g., chloroformReactivity code 2: Unnergangs violent chemical chynge at elevatit temperatures an pressurs, reacts violently wi water, or mey form explosive mixturs wi watter. E.g., phosphorusSpecial hazards (white): no codeNFPA 704 four-colored diamond
4
2
2
Flash pynt −136 °C (−213 °F; 137 K)
542.8 °C (1,009.0 °F; 815.9 K)
Relatit compoonds
Relatit compoonds
Ethane
Acetylene
Propene
Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa).
YesY verify (whit is YesYN ?)
Infobox references

Ethylene is widely uised in the chemical industrie, an its warldwide production (ower 150 million tonnes in 2016[5]) exceeds that o ony other organic compoond.[6][7] Muckle o this production gaes taewart polyethylene, a widely uised plastic conteenin polymer cheens o ethylene units in various cheen lenths. Ethylene is an aw an important naitural plant hormone an is uised in agricultur tae force the ripenin o fruits.[8] Ethylene's hydrate is ethanol.

ReferencesEedit

  1. Record o Ethylene in the GESTIS Substance Database frae the IFA, accessed on 25 October 2007
  2. 2.0 2.1 2.2 Neiland, O. Ya. (1990) Органическая химия: Учебник для хим. спец. вузов. Moscow. Vysshaya Shkola. p. 128.
  3. ETHYLENE | CAMEO Chemicals | NOAA. Cameochemicals.noaa.gov. Retrieved on 2016-04-24.
  4. Zimmermann, Heinz; Walz, Roland (2008). "Ethylene". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a10_045.pub3. ISBN 978-3527306732. 
  5. Research and Markets. "The Ethylene Technology Report 2016 - Research and Markets". www.researchandmarkets.com. Retrieved 19 June 2016. 
  6. "Production: Growth is the Norm". Chemical and Engineering News. 84 (28): 59–236. July 10, 2006. doi:10.1021/cen-v084n034.p059. 
  7. "Propylene Production from Methanol". Intratec. 2012-05-31. ISBN 978-0-615-64811-8. 
  8. Wang K, Li H, Ecker J; Li; Ecker (2002). "Ethylene Biosynthesis and Signaling Networks". Plant Cell. 14 (Suppl): S131–51. doi:10.1105/tpc.001768. PMC 151252 . PMID 12045274.