Propylene
Chemical compound (CH₃CH=CH₂) / From Wikipedia, the free encyclopedia
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For the unrelated compound sold as "Propolene", see glucomannan.
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.[3]
Quick Facts Names, Identifiers ...
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Names | |||
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Preferred IUPAC name
Propene[1] | |||
Identifiers | |||
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3D model (JSmol) |
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1696878 | |||
ChEBI | |||
ChEMBL | |||
ChemSpider |
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ECHA InfoCard | 100.003.693 | ||
EC Number |
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852 | |||
KEGG |
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PubChem CID |
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RTECS number |
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UNII | |||
UN number | 1077 In Liquefied petroleum gas: 1075 | ||
CompTox Dashboard (EPA) |
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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:[2] | |||
Danger | |||
H220 | |||
P210, P377, P381, P403 | |||
NFPA 704 (fire diamond) | |||
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).
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Propylene is a product of combustion from forest fires, cigarette smoke, and motor vehicle and aircraft exhaust.[4] It was discovered in 1850 by A. W. von Hoffman's student Captain (later Major General[5]) John Williams Reynolds as the only gaseous product of thermal decomposition of amyl alcohol to react with chlorine and bromine.[6]