propylene

American  

[proh-puh-leen] / ˈproʊ pəˌlin /

adjective

1. containing the propylene group.

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noun

1. Also a colorless, flammable gas, C 3 H 6 , of the olefin series: used chiefly in organic synthesis.

propylene British  

/ ˈprəʊpɪˌliːn /

noun

1. another name for propene

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propylene Scientific  

/ prō′pə-lēn′ /

1. A flammable gas produced by cracking (breaking down) petroleum and used to make plastics and isopropyl alcohol. Propylene is the second member of the alkene series. Also called propene. Chemical formula: C ₃ H ₆ .

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Etymology

Origin of propylene

First recorded in 1840–50; propyl + -ene

Example Sentences

Last week, Japanese giant Mitsubishi Chemical started cutting production capacity of its steam cracker, a facility that converts naphtha into ethylene and propylene, which it runs as a joint venture.

From Barron's • Mar. 18, 2026

Many familiar items, from plastic squeeze bottles to outdoor furniture, rely on a process that converts propane into propylene.

From Science Daily • Nov. 14, 2025

Polyolefins are produced by combining small chain links, or monomers, of ethylene or propylene, which are typically obtained from oil and natural gas.

From Los Angeles Times • Sep. 3, 2024

While, propylene glycol is non-toxic and widely used in medicines, cosmetics and food, ethylene glycol is toxic and used in paint, pens and brake fluid.

From BBC • Nov. 1, 2023

Tests have shown that, insofar as ease of detonation is concerned, 1,2-butylene oxide is similar to propylene 30 oxide.

From U.S. Patent 4,293,314: Gelled Fuel-Air Explosive October 6, 1981. by Stull, Bertram O.