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Food safety and quality
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| Flavouring |
Methyl 3-methylthiopropionate |
| Synonym(s) |
Methyl beta-methiopropionate;Methyl beta-(methylmercapto)propionate |
| Latest JECFA evaluation |
1999 (Session 53) |
| Status of specification |
Full |
| Information required |
|
| Chemical name |
Methyl 3-(methylthio)propionate |
| JECFA number |
472 |
| CAS number |
13532-18-8 |
| FEMA number |
2720 |
| COE number |
428 |
| FLAVIS number |
|
| Molecular weight |
134.19 |
| Chemical formula |
C5H10O2S |
| Physical form/odour |
colourless to pale yellow liquid with onion-like odour |
| Solubility |
very slightly soluble in water, soluble in alcohol |
| Solubility in ethanol |
|
| Boiling point (°C) |
74-75° (13 mm Hg) |
| Assay min % |
97% |
| Acid value max |
1 |
| Refractive index |
1.462-1.468 |
| Specific gravity |
1.069-1.078 |
| Other requirements |
|
| ID Test |
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/472.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/472.gif" width="60px;"></a><br>&dname=<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/472.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/472.gif" width="60px;"></a><br> "Download")
![](fileadmin/user_upload/jecfa/img/<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/472.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/472.gif" width="60px;"></a><br>)