Plural of butylene; multiple forms or instances of butylene hydrocarbons used in industrial chemistry and manufacturing.
Simple plural of butylene, following standard English pluralization. The term encompasses various isomeric forms of C4 unsaturated hydrocarbons.
Chemistry gets really precise about molecular structure—different butylenes have the same atoms arranged differently (isomers), and those tiny differences create completely different properties, which is wild to think about.
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