A clear, oily liquid compound formed when acetic acid combines with glycerol, used in cosmetics, medicines, and as a solvent.
From acetic acid + glycerin, named in the 1800s when chemists began systematically creating compounds by combining known substances to create new materials.
Acetin is one of the first designer chemicals humans created—it's what happens when you chemically marry acetic acid (from vinegar) with glycerin (from soap-making), making something completely new that doesn't exist in nature.
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