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Food safety and quality
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| |
| Flavouring |
3-(Methylthio)-2-butanone |
| Synonym(s) |
|
| Latest JECFA evaluation |
2007 (Session 68) |
| Status of specification |
Full |
| Information required |
|
| Chemical name |
3-(Methylthio)-2-butanone |
| JECFA number |
1688 |
| CAS number |
53475-15-3 |
| FEMA number |
4181 |
| COE number |
|
| FLAVIS number |
|
| Molecular weight |
118.2 |
| Chemical formula |
C5H10OS |
| Physical form/odour |
Colourless to yellow liquid; Pungent odour |
| Solubility |
Sparingly soluble |
| Solubility in ethanol |
Soluble |
| Boiling point (°C) |
50-54° (20 mm Hg) |
| Assay min % |
97% |
| Acid value max |
|
| Refractive index |
1.469-1.471 |
| Specific gravity |
0.975-0.979 |
| Other requirements |
|
| ID Test |
NMR IR |
| 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/jecfa68/1688-nmr.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/jecfa68/1688-nmr.gif" width="60px;"></a><br><a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/jecfa68/1688-ir.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/jecfa68/1688-ir.gif" width="60px;"></a><br>&dname=<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/jecfa68/1688-nmr.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/jecfa68/1688-nmr.gif" width="60px;"></a><br><a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/jecfa68/1688-ir.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/jecfa68/1688-ir.gif" width="60px;"></a><br> "Download")
![](fileadmin/user_upload/jecfa/img/<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/jecfa68/1688-nmr.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/jecfa68/1688-nmr.gif" width="60px;"></a><br><a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/jecfa68/1688-ir.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/jecfa68/1688-ir.gif" width="60px;"></a><br>)