A chemical compound formed by combining glycerin with acetic acid, used as a solvent and plasticizer.
From 'dia-' (two) + 'acet-' (acetic) + '-in' (chemical suffix), literally glycerin with two acetic acid molecules attached.
Diacetin is used to make plastics flexible and gun propellants burn smoothly—it's one of those invisible chemicals that make modern materials work, yet few people know it exists.
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