Propylene

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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 was discovered in 1850 by A. W. von Hofmann's student John Williams Reynolds as the only gaseous product of thermal decomposition of amyl alcohol to react with chlorine and bromine. The majority of propylene, which is produced on the scale of many millions of tonnes annually, is used for the production of polypropylene.

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