Immiscible Definition and Example

What Does Immiscible Mean in Chemistry?

Oil and water don't mix. They are said to be immiscible.
Oil and water don't mix. They are said to be immiscible. Martin Leigh, Getty Images

The terms miscible and immiscible are used in chemistry to describe mixtures.

Immiscible Definition

Immiscibility is the property where two substances are not capable of combining to form a homogeneous mixture. The components are said to be "immiscible." In contrast, fluids that do mix together are called "miscible."

Components of an immiscible mixture will separate from each other. The less dense fluid will rise to the top; the more dense component will sink.

Immiscible Examples

Oil and water are immiscible liquids. In contrast, alcohol and water are completely miscible. In any proportion, alcohol and water will mix to form a homogeneous solution.

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Helmenstine, Anne Marie, Ph.D. "Immiscible Definition and Example." ThoughtCo, Dec. 8, 2017, thoughtco.com/definition-of-immiscible-and-example-605237. Helmenstine, Anne Marie, Ph.D. (2017, December 8). Immiscible Definition and Example. Retrieved from https://www.thoughtco.com/definition-of-immiscible-and-example-605237 Helmenstine, Anne Marie, Ph.D. "Immiscible Definition and Example." ThoughtCo. https://www.thoughtco.com/definition-of-immiscible-and-example-605237 (accessed April 25, 2018).