Introduction
Name: 2,3-butanedione; biacetyl
* IUPAC
CAS Number: 431-03-8
Molar Mass: 86.08924 g
State of Matter: liquid with buttery odor
Mass Percent: C 55.805 %; H 7.0248 %; O 37.169 %
Isomers: vinyl acetate • butynediol • diepoxybutane • methyl acrylate • &gamma
Classification
• organic
Uses/Function
• "Carrier of aroma of butter, vinegar, coffee, and other foods." 1
Physical Properties
Boiling Point:*
88°C 2 = 361.15 K = 190.4°F
* - 1 atm pressure
Bonding
For More Information
Sources
(1) - The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals, 13th ed.; Budavari, S.; O'Neil, M.J.; Smith, A.; Heckelman, P. E.; Kinneary, J. F., Eds.; Merck & Co.: Whitehouse Station, NJ, 2001; entry 2985.
(2) - Shriner, Ralph L., Fuson, Reynold C., and Curtin, David Y. The Systematic Identification of Organic Compounds, 4th ed.; John Wiley & Sons: New York, 1962; p 316.