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Food safety and quality
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| Flavouring |
1-Methylthio-2-propanone |
| Synonym(s) |
2-Thia-4-pentanone;2-Propanone, 1-(methylthio)-;alpha-(Methylthio)propanone;(Methylthio)acetone, alpha(Methylthio)acetone |
| Latest JECFA evaluation |
2003 (Session 61) |
| Status of specification |
Full |
| Information required |
|
| Chemical name |
1-Methylthio-2-propanone |
| JECFA number |
495 |
| CAS number |
14109-72-9 |
| FEMA number |
3882 |
| COE number |
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| FLAVIS number |
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| Molecular weight |
104.17 |
| Chemical formula |
C4H8OS |
| Physical form/odour |
colourless to pale yellow liquid with odour of melon |
| Solubility |
very slightly soluble in water; soluble in alcohols and oils |
| Solubility in ethanol |
|
| Boiling point (°C) |
35-40° (15 mm Hg) |
| Assay min % |
97% |
| Acid value max |
|
| Refractive index |
1.395-1.405 |
| Specific gravity |
0.967-0.973 |
| 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/495.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/495.gif" width="60px;"></a><br>&dname=<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/495.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/495.gif" width="60px;"></a><br> "Download")
![](fileadmin/user_upload/jecfa/img/<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/495.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/495.gif" width="60px;"></a><br>)