Propylene

Propylene, also known as propene, is an unsaturated organic compound with the chemical formula CH3CH=CH2. It has one double bond, and is the second simplest member of the alkene class of hydrocarbons. It is a colorless gas with a faint petroleum-like odor.

Propylene
Names
Preferred IUPAC name
Propene
Identifiers
3D model (JSmol)
1696878
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.003.693
EC Number
  • 204-062-1
852
KEGG
RTECS number
  • UC6740000
UNII
UN number 1077
In Liquefied petroleum gas: 1075
  • InChI=1S/C3H6/c1-3-2/h3H,1H2,2H3 Y
    Key: QQONPFPTGQHPMA-UHFFFAOYSA-N Y
  • InChI=1/C3H6/c1-3-2/h3H,1H2,2H3
    Key: QQONPFPTGQHPMA-UHFFFAOYAA
  • C=CC
  • CC=C
Properties
C3H6
Molar mass 42.081 g·mol−1
Appearance Colorless gas
Density 1.81 kg/m3, gas (1.013 bar, 15 °C)
1.745 kg/m3, gas (1.013 bar, 25 °C)
613.9 kg/m3, liquid
Melting point −185.2 °C (−301.4 °F; 88.0 K)
Boiling point −47.6 °C (−53.7 °F; 225.6 K)
0.61 g/m3
-31.5·10−6 cm3/mol
Viscosity 8.34 µPa·s at 16.7 °C
Structure
0.366 D (gas)
Hazards
GHS labelling:
Danger
H220
P210, P377, P381, P403
NFPA 704 (fire diamond)
1
4
1
Flash point −108 °C (−162 °F; 165 K)
Safety data sheet (SDS) External MSDS
Related compounds
Related alkenes;
related groups
Ethylene, Isomers of Butylene;
Allyl, Propenyl
Related compounds
Propane, Propyne
Propadiene, 1-Propanol
2-Propanol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y verify (what is YN ?)
Infobox references

Propylene is a product of combustion from forest fires, cigarette smoke, and motor vehicle and aircraft exhaust. It was discovered in 1850 by A. W. von Hoffman's student Captain (later Major General) John Williams Reynolds as the only gaseous product of thermal decomposition of amyl alcohol to react with chlorine and bromine.

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