Definition - What does Immiscible mean?

Immiscible is a property of liquids that states the condition when two liquids are unable to mix together. Immiscible liquids do not attain homogeneity. It is an essential property of the liquids as it is used to separate liquids corresponding to their respective boiling points. Chromatography and fractional distillation are the two main techniques used to separate immiscible liquids. A mixture of oil and water is one of the perfect examples to explain the property. The long carbon chains of liquids, is the reason why liquids are immiscible in water.

Petropedia explains Immiscible

Miscible defines the property of substances that forms homogeneous solutions when substances are mixed together. However, in contrast, the liquids, solids, or gases that do not mix together in same proportions are immiscible in nature. In organic compounds, the hydrocarbon chain describes the miscibility of a compound with the water. Substances with long carbon chains are immiscible in nature. For instance, ethanol having 2 carbon atoms easily mixes with water whereas 1-Octanol which has 8 carbon atoms does not mix with water. Another important fact about immiscible metals is that they do not form alloys when combined with each other.

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