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Food safety and quality
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| Flavouring |
1-Methyl-1-cyclopenten-3-one |
| Synonym(s) |
3-Methyl-2-cyclopenten-1-one |
| Latest JECFA evaluation |
2002 (Session 59) |
| Status of specification |
Full |
| Information required |
|
| Chemical name |
3-Methylcyclopent-2-en-1-one |
| JECFA number |
1105 |
| CAS number |
2758-18-1 |
| FEMA number |
3435 |
| COE number |
11137 |
| FLAVIS number |
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| Molecular weight |
96.12 |
| Chemical formula |
C6H8O |
| Physical form/odour |
Pale straw-coloured liquid; warm-spicy, sweet-floral and diffusive yet quite tenaceous odour |
| Solubility |
soluble in water; soluble in oil |
| Solubility in ethanol |
Miscible at room temperature |
| Boiling point (°C) |
74° (15 mm Hg) |
| Assay min % |
98% |
| Acid value max |
|
| Refractive index |
1.485-1.491 |
| Specific gravity |
0.968-0.975 |
| Other requirements |
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| 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/1105.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/1105.gif" width="60px;"></a><br>&dname=<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/1105.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/1105.gif" width="60px;"></a><br> "Download")
![](fileadmin/user_upload/jecfa/img/<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/1105.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/1105.gif" width="60px;"></a><br>)