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Food safety and quality
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| |
| Flavouring |
3-Penten-2-one |
| Synonym(s) |
Methyl propenyl ketone;Ethylidene acetone |
| Latest JECFA evaluation |
2002 (Session 59) |
| Status of specification |
Full |
| Information required |
|
| Chemical name |
Pent-3-en-2-one |
| JECFA number |
1124 |
| CAS number |
625-33-2 |
| FEMA number |
3417 |
| COE number |
666 |
| FLAVIS number |
|
| Molecular weight |
84.12 |
| Chemical formula |
C5H8O |
| Physical form/odour |
Colourless liquid; fruity odour becoming pungent on storage |
| Solubility |
slightly soluble in water; soluble in oil |
| Solubility in ethanol |
Miscible at room temperature |
| Boiling point (°C) |
122° |
| Assay min % |
98% |
| Acid value max |
|
| Refractive index |
1.433-1.437 |
| Specific gravity |
0.860-0.865 |
| Other requirements |
|
| ID Test |
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/1124.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/1124.gif" width="60px;"></a><br>&dname=<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/1124.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/1124.gif" width="60px;"></a><br> "Download")
![](fileadmin/user_upload/jecfa/img/<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/1124.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/1124.gif" width="60px;"></a><br>)