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Online Edition: "Specifications for Flavourings"
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| Flavouring |
5-Methyl-2,3-hexanedione |
| Synonym(s) |
Acetyl isopentanoyl
Acetyl isovaleryl
Isobutyl methyl diketone
Isobutyl methyl glyoxal
2-Methyl-4,5-hexanedione
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| Latest JECFA evaluation |
2000 (Session 55)
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| Status of specification |
Full |
| Chemical name |
5-Methylhexane-2,3-dione
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| JECFA number |
414 |
| CAS number |
13706-86-0
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| FEMA number |
3190
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| COE number |
11148
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| FLAVIS number |
-
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| Molecular weight |
128.17 |
| Chemical formula |
C7H12O2
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| Physical form/odour |
yellowish liquid oil with a butter odour |
| Solubility |
slightly soluble in water; miscible with alcohol, propylene glycol, and glycerol |
| Solubility in ethanol |
- |
| Boiling point (°C) |
138 |
| Assay min % |
95% |
| Acid value max |
- |
| Refractive index |
1.408-1.414 |
| Specific gravity |
0.908 (22°) |
| Other requirements |
- |
| ID Test |
IR |
| Spectrum |
http://www.fao.org/ag/agn/jecfa-flav/img/img/414.gif
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