Definition of "isobutane" [isobutane]

• A hydrocarbon, a particular isomer of C4H10 found in natural gas. (noun)

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• "Now suppose we want to study the reactions of a number of different molecules, say add some pentane, hexane, heptane, and octane to the mix, and put in all the possible isomers of those compounds as well there’s only one other isomer of butane, called isobutane, but toss in some of that as well."
• "A geothermal electricity plant can tap into that hot water and bring it to the surface, where it is used to heat a fluid, such as isobutane, which boils at a lower temperature than water."
• "Another potential alternative is hydrocarbon-based refrigerants, such as isobutane, which has been used in household refrigerators throughout Europe and in parts of Asia for a number of years."