1. A yellow liquid organic compound (2,3-butanedione) with a butter-like odor, used as a flavoring agent and in organic synthesis.
Usage: chemistry; also called diacetyl

Examples

• Biacetyl is commonly used to impart a buttery flavor to foods and beverages.
• The chemical structure of biacetyl consists of two acetyl groups bonded together.
• Biacetyl has been associated with respiratory health concerns in workers exposed to high concentrations.
• Food manufacturers use biacetyl as a flavoring compound in microwave popcorn and dairy products.
• The distinctive aroma of biacetyl makes it useful in fragrance applications.