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Food safety and quality
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| Flavouring |
2-Octen-4-one |
| Synonym(s) |
Butyl propenyl ketone;Propenyl butyl ketone |
| Latest JECFA evaluation |
2002 (Session 59) |
| Status of specification |
Full |
| Information required |
|
| Chemical name |
Oct-2-en-4-one |
| JECFA number |
1129 |
| CAS number |
4643-27-0 |
| FEMA number |
3603 |
| COE number |
2313 |
| FLAVIS number |
|
| Molecular weight |
126.2 |
| Chemical formula |
C8H14O |
| Physical form/odour |
Colourless liquid; fruity floral odour |
| Solubility |
insoluble in water; soluble in fats |
| Solubility in ethanol |
Miscible at room temperature |
| Boiling point (°C) |
81° (20-21 mm Hg) |
| Assay min % |
96% |
| Acid value max |
|
| Refractive index |
1.440-1.446 |
| Specific gravity |
0.835-0.842 |
| Other requirements |
[Predominantly (>90%) trans-isomer] |
| ID Test |
IR NMR |
| Spectrum |
 
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![](../typo3conf/ext/dyna_fef/download.php?dfile=/work/htdocs/disseminationtypo3/web/fileadmin/user_upload/jecfa/img/<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/1129.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/1129.gif" width="60px;"></a><br>&dname=<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/1129.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/1129.gif" width="60px;"></a><br> "Download")
![](fileadmin/user_upload/jecfa/img/<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/1129.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/1129.gif" width="60px;"></a><br>)