| |||
Names | |||
---|---|---|---|
Preferred IUPAC name
Ethene[1] | |||
Systematic IUPAC name
Ethene | |||
Other names
Refrigerant R-1150
| |||
Identifiers | |||
3D model (JSmol)
|
|||
1730731 | |||
ChEBI | |||
ChEMBL | |||
ChemSpider | |||
ECHA InfoCard | 100.000.742 | ||
EC Number |
| ||
214 | |||
KEGG | |||
PubChem CID
|
|||
RTECS number |
| ||
UNII | |||
UN number | 1962 1038 | ||
CompTox Dashboard (EPA)
|
|||
| |||
| |||
Properties | |||
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) | ||
131 mg/L (25 °C);[3] 2.9 mg/L[4] | |||
Solubility in ethanol | 4.22 mg/L[4] | ||
Solubility in diethyl ether | good[4] | ||
Acidity (pKa) | 44 | ||
Conjugate acid | Ethenium | ||
-15.30·10−6 cm3/mol | |||
Viscosity | 10.28 μPa·s[5] | ||
Structure | |||
D2h | |||
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: | |||
Danger | |||
H220, H336 | |||
P210, P261, P271, P304+P340, P312, P377, P381, P403, P403+P233, P405, P501 | |||
NFPA 704 (fire diamond) | |||
Flash point | −136 °C (−213 °F; 137 K) | ||
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).
|
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.[7] 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[8]) exceeds that of any other organic compound.[9][10] 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.[11] The hydrate of ethylene is ethanol.
UllmannEthylene
was invoked but never defined (see the help page).