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Food safety and quality
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| Flavouring |
4-Methyl-3-penten-2-one |
| Synonym(s) |
Mesityl oxide;Methyl isobutenyl ketone;Isopropylidene acetone |
| Latest JECFA evaluation |
2002 (Session 59) |
| Status of specification |
Full |
| Information required |
|
| Chemical name |
4-Methylpent-3-en-2-one |
| JECFA number |
1131 |
| CAS number |
141-79-7 |
| FEMA number |
3368 |
| COE number |
11853 |
| FLAVIS number |
|
| Molecular weight |
98.14 |
| Chemical formula |
C6H10O |
| Physical form/odour |
Colourless oily liquid; unpleasant grassy-green or pungent, acrylic odour |
| Solubility |
slightly soluble inwater; miscible in organic solvents |
| Solubility in ethanol |
Miscible at room temperature |
| Boiling point (°C) |
128-130 |
| Assay min % |
95% |
| Acid value max |
|
| Refractive index |
1.442-1.447 |
| Specific gravity |
0.862-0.868 |
| Other requirements |
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| ID Test |
NMR |
| Spectrum |
 
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