|
Food safety and quality
|
|
|
| |
| Flavouring |
Tetrahydro-4-methyl-2-(2-methylpropen-1-yl)pyran |
| Synonym(s) |
Rosenoxide;Rosoxide;Rose oxide;4-Methyl-2-(2-methyl-1-propenyl)-tetrahydropyran;2-Isobutenyl-4-methyltetrahydropyran;cis-Rose oxide |
| Latest JECFA evaluation |
2003 (Session 61) |
| Status of specification |
Full |
| Information required |
|
| Chemical name |
Tetrahydro-4-methyl-2-(2-methyl-1-propenyl)-2H-pyran |
| JECFA number |
1237 |
| CAS number |
16409-43-1 |
| FEMA number |
3236 |
| COE number |
|
| FLAVIS number |
13.170 |
| Molecular weight |
154.25 |
| Chemical formula |
C10H18O |
| Physical form/odour |
colourless mobile liquid, powerful, distinctive geranium top note |
| Solubility |
Slightly soluble in water; soluble in oils |
| Solubility in ethanol |
soluble |
| Boiling point (°C) |
182° |
| Assay min % |
99% |
| Acid value max |
1 |
| Refractive index |
1.453-1.457 |
| Specific gravity |
0.873-0.877 |
| Other requirements |
|
| 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/1237.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/1237.gif" width="60px;"></a><br>&dname=<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/1237.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/1237.gif" width="60px;"></a><br> "Download")
![](fileadmin/user_upload/jecfa/img/<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/1237.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/1237.gif" width="60px;"></a><br>)