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'''Propylene''' (C<sub>3</sub>H<sub>6</sub>) is an an [[olefinic hydrocarbon]] recovered from refinery processes or petrochemical processes.
'''Propylene''' (C<sub>3</sub>H<sub>6</sub>) is an an [[olefinic hydrocarbon]] recovered from refinery processes or petrochemical processes.
[[category:energy]]
[[Category:Energy]]