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Food safety and quality
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|
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| |
| Flavouring |
2-Keto-4-butanethiol |
| Synonym(s) |
1,2-Dimercaptobutane |
| Latest JECFA evaluation |
2003 (Session 61) |
| Status of specification |
Full |
| Information required |
|
| Chemical name |
4-Mercapto-2-butanone |
| JECFA number |
559 |
| CAS number |
34619-12-0 |
| FEMA number |
3357 |
| COE number |
11498 |
| FLAVIS number |
12.055 |
| Molecular weight |
104.17 |
| Chemical formula |
C4H8OS |
| Physical form/odour |
|
| Solubility |
|
| Solubility in ethanol |
|
| Boiling point (°C) |
59-60° (15 mm Hg) |
| Assay min % |
99% |
| Acid value max |
|
| Refractive index |
1.472-1.478 |
| Specific gravity |
0.855-0.861 |
| Other requirements |
|
| 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/559.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/559.gif" width="60px;"></a><br>&dname=<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/559.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/559.gif" width="60px;"></a><br> "Download")
![](fileadmin/user_upload/jecfa/img/<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/559.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/559.gif" width="60px;"></a><br>)