Residue Definition (Chemistry)

What Is a Residue?

A residue can be an undesirable by-product of a chemical reaction.
A residue can be an undesirable by-product of a chemical reaction. C. Allan Morgan / Getty Images

Residue Definition: Residue has several meanings in chemistry.

  1. Residue is the matter left in a container after evaporation or distillation has occurred.
  2. Residue is the undesirable byproduct of a chemical reaction.
  3. Residue is recognizable molecular part of a larger molecule. For example, an amino acid is the residue of a larger protein chain.
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Helmenstine, Anne Marie, Ph.D. "Residue Definition (Chemistry)." ThoughtCo, Jul. 24, 2017, thoughtco.com/definition-of-residue-in-chemistry-605614. Helmenstine, Anne Marie, Ph.D. (2017, July 24). Residue Definition (Chemistry). Retrieved from https://www.thoughtco.com/definition-of-residue-in-chemistry-605614 Helmenstine, Anne Marie, Ph.D. "Residue Definition (Chemistry)." ThoughtCo. https://www.thoughtco.com/definition-of-residue-in-chemistry-605614 (accessed January 19, 2018).