Description
Synonyms: Diacetyl, 2,3-Butanedione, 2,3-Butadione, Dimethyldiketon, Dimethylglyoxal
DESCRIPTION
Diacetyl, also known as 2,3-butanedione, is a chemical compound that has a buttery flavor and is used in a variety of foods and products:
- Foods: Diacetyl is found naturally in some cheeses and alcoholic beverages, and is added to foods like popcorn, coffee, and margarine to give them a buttery flavor.
- Butter: Low levels of diacetyl are present in butter, and extra diacetyl is added to unsalted butter to extend its shelf life.
- E-cigarettes: Diacetyl is used as a flavoring in e-cigarettes.
Application
- Photosensitizer in Synthesis: Discusses diacetyl′s role as a non-toxic, readily available “traceless” photosensitizer in metal-free cross-dehydrogenative coupling reactions, highlighting its versatility and economic benefits (Huang et al., 2019).
- Detection in E-cigarettes: Investigates diacetyl as a precursor to hazardous emissions in e-cigarette liquids, providing insights into the health risks associated with its use in vaping products (Vas, Porter & McAdam, 2019).
- Antimicrobial Activity: Explores the synergistic antimicrobial properties of diacetyl combined with reuterin against foodborne pathogens, emphasizing its potential for enhancing food safety (Langa et al., 2014).
- Coffee Industry Exposure: Details exposure levels to diacetyl and other volatile organic compounds in coffee roasting and café settings, discussing oc
PROPERTIES
vapor pressure
52 hPa ( 20 °C)
Pack Size
100mL; 250mL
Assay
≥97.0% (GC)
form
liquid
autoignition temp.
365 °C
potency
1580 mg/kg LD50, oral (Rat)
>5000 mg/kg LD50, skin (Rabbit)
expl. lim.
2.4-13.0 % (v/v)
bp
89-90 °C/1013 hPa
mp
-2 °C
transition temp
flash point 7 °C
density
0.99 g/cm3 at 20 °C
storage temp.
2-8°C
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