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Diacetyl

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Identification
Molecular formula
C4H6O2
CAS number
431-03-8
IUPAC name
butane-2,3-dione
State
State

Diacetyl is typically found as a liquid at room temperature.

Melting point (Celsius)
-2.00
Melting point (Kelvin)
271.15
Boiling point (Celsius)
88.00
Boiling point (Kelvin)
361.15
General information
Molecular weight
86.09g/mol
Molar mass
86.0890g/mol
Density
0.9865g/cm3
Appearence

Diacetyl is a yellow to green liquid. It has a distinctive buttery aroma and is used as an artificial flavoring to impart a buttery taste.

Comment on solubility

Solubility of Butane-2,3-dione (C4H6O2)

Butane-2,3-dione, commonly known as diacetyl, showcases interesting solubility characteristics that are worth exploring. This compound is primarily known for its role in flavoring, particularly in buttery flavors. When it comes to solubility, diacetyl has several notable features:

  • Solvent Compatibility: Butane-2,3-dione is highly soluble in water, making it accessible for various applications. Its polar carbonyl groups allow it to interact favorably with water molecules.
  • Organic Solvents: It is also soluble in many organic solvents such as ethanol, acetone, and ether. This characteristic is beneficial for its use in organic synthesis and formulations.
  • Temperature Effects: The solubility of diacetyl tends to increase with temperature, which is a common trait among many solutes. Higher temperatures can enhance molecular movement, thus allowing more solute to dissolve.

In summary, the solubility of butane-2,3-dione in both polar and non-polar solvents contributes to its versatility in chemical applications. Its unique properties and interaction with solvents make it a compound of interest in the scientific community.

Interesting facts

Interesting Facts about Butane-2,3-dione

Butane-2,3-dione, commonly referred to as diacetyl, is an intriguing compound that captures the attention of both chemists and food scientists alike. Here are some fascinating aspects of this compound:

  • Flavor Profile: Diacetyl is well-known for its characteristic buttery flavor, which makes it a popular additive in various food products, especially popcorn and margarine.
  • Biological Role: Interestingly, diacetyl is also produced naturally during the fermentation process by certain bacteria, adding a unique taste to fermented foods.
  • Reactivity: The compound is a diketone, featuring two carbonyl groups, which makes it reactive in certain chemical reactions, such as aldol condensations.
  • Health Considerations: Despite its appealing flavor, prolonged exposure to diacetyl in its vapor form has raised health concerns among workers in the food industry, leading to its careful regulation.
  • Production Methods: Diacetyl can be produced synthetically through various methods, including the oxidation of butane or through biosynthetic pathways involving microbial fermentation.

In essence, butane-2,3-dione is not just a compound with a simple formula; it plays a multifaceted role in chemistry and food science that showcases the intricate relationship between taste and chemical structure.

Synonyms
2,3-butanedione
diacetyl
biacetyl
Butane-2,3-dione
431-03-8
Butanedione
dimethylglyoxal
dimethyl diketone
2,3-diketobutane
Dimethyl glyoxal
2,3-Butadione
butadione
2,3-dioxobutane
Glyoxal, dimethyl-
Diacetyl (natural)
2,3-butandione
FEMA No. 2370
Butan-2,3-dione
CCRIS 827
HSDB 297
NSC 8750
2,3-Butanedione-13C2
MFCD00008756
UN2346
AI3-03313
2,3 butandione
EINECS 207-069-8
UNII-K324J5K4HM
BRN 0605398
Buta-2,3-dione
K324J5K4HM
DTXSID6021583
CHEBI:16583
DIACETYL [FHFI]
DIACETYL [HSDB]
DIACETYL [FCC]
DIACETYL [MI]
NSC-8750
(CH3CO)2
DTXCID701583
4-01-00-03644 (Beilstein Handbook Reference)
butanodiona
Diketobutane
Dimethyldiketone
2.3-butanedione
2,3 Butanedione
2,3butanedione
2,3Diketobutane
2,3Dioxobutane
butane 2
butane-2
Glyoxal, dimethyl
Biacetyl; BDM
2,3Butadione
Butanedione (DOT)
Butanodiona (Spanish)
Butanedione [UN2346] [Flammable liquid]
Lopac-D-3634
Butanedione [UN2346]
2,3-Butanedione, 97%
Lopac0_000387
Diacetyl, natural, >=95%
WLN: 1VV1
CHEMBL365809
SGCUT00113
2,3-Butanedione (8CI,9CI)
BDBM22725
NSC8750
HMS3261M15
to_000005
Tox21_201218
Tox21_500387
LMFA12000012
2,3-Butanedione, analytical standard
AKOS000118816
Diacetyl 1000 microg/mL in Methanol
CCG-204481
LP00387
SDCCGSBI-0050374.P002
NCGC00015336-01
NCGC00015336-02
NCGC00015336-03
NCGC00015336-04
NCGC00015336-05
NCGC00015336-06
NCGC00015336-07
NCGC00090746-01
NCGC00090746-02
NCGC00090746-03
NCGC00258770-01
NCGC00261072-01
CAS-431-03-8
DB-003226
B0682
Butanedione [UN2346] [Flammable liquid]
EU-0100387
NS00003558
EN300-19494
C00741
D 3634
W18292
A826155
Q408916
SR-01000075811
SR-01000075811-1
DEE64962-0BD5-454C-8BDA-FDBD33C47181
F0001-1188
Flavor and Extract Manufacturers' Association No. 2370
2,3-butanedione, 2,3-butadione, 2,3-diketobutane, dimethyl diketone, dimethylglyoxal, glyoxal, dimethyl-
BUO