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Online Edition: "Specifications for Flavourings"
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| Flavouring |
4-Methyl-3-penten-2-one |
| Synonym(s) |
Isopropylidene acetone
Mesityl oxide
Methyl isobutenyl ketone
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| Latest JECFA evaluation |
2002 (Session 59)
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| Status of specification |
Full |
| Chemical name |
4-Methylpent-3-en-2-one
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| JECFA number |
1131 |
| CAS number |
141-79-7
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| FEMA number |
3368
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| COE number |
11853
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| FLAVIS number |
-
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| Molecular weight |
98.14 |
| Chemical formula |
C6H10O
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| 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 |
- |
| ID Test |
NMR |
| Spectrum |
http://www.fao.org/ag/agn/jecfa-flav/img/img/1131.gif
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