1. Plural of pentene; unsaturated hydrocarbons with five carbon atoms and one double bond, having the general formula C₅H₁₀.
Usage: chemistry; organic chemistry term; also called amylenes

Examples

• Pentenes are important intermediates in the petrochemical industry.
• The different isomers of pentenes have varying boiling points and chemical properties.
• 1-Pentene and 2-pentene are the most common pentenes produced commercially.
• Pentenes can be used as monomers in the production of polymers.
• The reaction of pentenes with hydrogen produces pentanes.