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Food safety and quality
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| Flavouring |
3-Mercaptopropionic acid |
| Synonym(s) |
2-Mercaptoethanecarboxylic acid;Thiohydracrylic acid;3-Thiopropionic acid;3-Thiopropanoic acid;Propanoic acid, 3-mercapto- |
| Latest JECFA evaluation |
2010 (Session 73) |
| Status of specification |
Full |
| Information required |
|
| Chemical name |
3-mercaptopropanoic acid |
| JECFA number |
1936 |
| CAS number |
107-96-0 |
| FEMA number |
4587 |
| COE number |
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| FLAVIS number |
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| Molecular weight |
106.14 |
| Chemical formula |
C3H6O2S |
| Physical form/odour |
Clear colourless to pale yellow oily liquid; Roasted sulphureous aroma |
| Solubility |
Practically insoluble or insoluble in water |
| Solubility in ethanol |
Soluble |
| Boiling point (°C) |
110-111° (15 mmHg) |
| Assay min % |
98% |
| Acid value max |
|
| Refractive index |
1.490-1.496 |
| Specific gravity |
1.220-1.226 (20°) |
| Other requirements |
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| 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/jecfa73/1936-ms.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/jecfa73/1936-ms.gif" width="60px;"></a><br>&dname=<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/jecfa73/1936-ms.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/jecfa73/1936-ms.gif" width="60px;"></a><br> "Download")
![](fileadmin/user_upload/jecfa/img/<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/jecfa73/1936-ms.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/jecfa73/1936-ms.gif" width="60px;"></a><br>)