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Food safety and quality
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| Flavouring |
5-Hydroxyundecanoic acid lactone |
| Synonym(s) |
delta-Undecalactone;Undeca-1,5-lactone |
| Latest JECFA evaluation |
1998 (Session 51) |
| Status of specification |
Full |
| Information required |
|
| Chemical name |
5-Undecanolide;6-Hexyltetrahydro-2-pyrone |
| JECFA number |
234 |
| CAS number |
710-04-3 |
| FEMA number |
3294 |
| COE number |
688 |
| FLAVIS number |
|
| Molecular weight |
184.28 |
| Chemical formula |
C11H20O2 |
| Physical form/odour |
colourless to pale yellow liquid with a creamy, peach-like odour |
| Solubility |
|
| Solubility in ethanol |
1 ml in 1 ml 95% alcohol |
| Boiling point (°C) |
152-155° (10.5 mm Hg) |
| Assay min % |
98.0% |
| Acid value max |
|
| Refractive index |
1.457-1.461 |
| Specific gravity |
0.956-0.961 |
| Other requirements |
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| ID Test |
IR |
| 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/234.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/234.gif" width="60px;"></a><br>&dname=<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/234.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/234.gif" width="60px;"></a><br> "Download")
![](fileadmin/user_upload/jecfa/img/<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/234.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/234.gif" width="60px;"></a><br>)