Unsaturated compound

In organic chemistry, an unsaturated compound is a chemical compound that contains carbon - carbon pi bonds such as an alkene or an alkyne. In a saturated compound these pi bonds are removed by the addition of hydrogen and no multiple bonds are present. Alkanes are examples of saturated compounds.

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It is in this sense that fatty acids are classified as saturated or unsaturated, according to their iodine number.

See also

Saturation (chemistry)