1.Product name: Butanedione, 2.Synonyms: Diacetyl, 2,3-butanedione 3.Cas:431-03-8 Appearance: 2,3-butanedione is a yellowish green liquid.Applications:Diacetyl is used for the manufacturers of margarines or similar oil-based products2,3-butanedione is used in alcoholic beveragesIt is used for Flavors&Essences. Butanedione (Cas 431-03-8)