|
Food safety and quality
|
|
|
| |
| Flavouring |
2-Hexyl-5 or 6-keto-1,4-dioxane |
| Synonym(s) |
5(or 6)-Hexyl-1,4-dioxan-2-one;(1 or 2-Hexyl-2-hydroxyethoxy)acetic acid, d-lactone |
| Latest JECFA evaluation |
2005 (Session 65) |
| Status of specification |
Full |
| Information required |
|
| Chemical name |
2-Hexyl-5 or 6-keto-1,4-dioxane |
| JECFA number |
1486 |
| CAS number |
65504-97-4 |
| FEMA number |
2574 |
| COE number |
|
| FLAVIS number |
|
| Molecular weight |
186.25 |
| Chemical formula |
C10H18O3 |
| Physical form/odour |
Colourless or very pale yellow liquid; Powerful sweet, nut-like aroma |
| Solubility |
Slightly soluble in water; Soluble in oil |
| Solubility in ethanol |
Soluble |
| Boiling point (°C) |
104° (15 mm Hg) |
| Assay min % |
97% |
| Acid value max |
|
| Refractive index |
1.486-1.492 |
| Specific gravity |
1.280-1.286 |
| Other requirements |
[Lactone undergoes ring opening in basic solution] |
| ID Test |
NMR |
| Spectrum |
 
|
|
|
|
![](../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/1486.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/1486.gif" width="60px;"></a><br>&dname=<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/1486.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/1486.gif" width="60px;"></a><br> "Download")
![](fileadmin/user_upload/jecfa/img/<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/1486.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/1486.gif" width="60px;"></a><br>)