Definition of "butylene" []

• Any of three gaseous isomeric ethylene hydrocarbons, C4H8, used principally in making synthetic rubbers. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Notably, it is easily converted into a commodity chemical called butylene, which has four carbon atoms and is in relatively short supply right now."
• "Other figures in masks and butylene suits were gathered at the base of the structure to inspect isolated material for toxic content."
• "Petrochemicals are products derived from crude oil refining, such as ethylene, propylene, butylene, and isobutylene, that are primarily intended for use as chemical feedstocks in the production of plastics, synthetic fibers, synthetic rubbers, and other products."