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Food safety and quality
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| Flavouring |
4-(Methylthio)-2-butanone |
| Synonym(s) |
|
| Latest JECFA evaluation |
2000 (Session 55) |
| Status of specification |
Full |
| Information required |
|
| Chemical name |
4-(Methylthio)-2-butanone |
| JECFA number |
497 |
| CAS number |
34047-39-7 |
| FEMA number |
3375 |
| COE number |
11688 |
| FLAVIS number |
|
| Molecular weight |
118.19 |
| Chemical formula |
C5H10OS |
| Physical form/odour |
sweet, sulfurous, fruity flavor like arrowhead |
| Solubility |
insoluble in water |
| Solubility in ethanol |
|
| Boiling point (°C) |
106° (55 mm Hg); 77-78° (20 mm Hg) |
| Assay min % |
97% |
| Acid value max |
|
| Refractive index |
1.470-1.481 |
| Specific gravity |
1.000-1.007 |
| Other requirements |
|
| ID Test |
MS |
| 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/img_add8/497.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/img_add8/497.gif" width="60px;"></a><br>&dname=<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/img_add8/497.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/img_add8/497.gif" width="60px;"></a><br> "Download")
![](fileadmin/user_upload/jecfa/img/<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/img_add8/497.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/img_add8/497.gif" width="60px;"></a><br>)