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Food safety and quality
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| Flavouring |
4,5-Dihydro-3(2H) thiophenone |
| Synonym(s) |
3-Thiophane;Tetrahydrothiophene-3-one |
| Latest JECFA evaluation |
2000 (Session 55) |
| Status of specification |
Full |
| Information required |
|
| Chemical name |
4,5-Dihydro-3(2H)-thiophenone |
| JECFA number |
498 |
| CAS number |
1003-04-9 |
| FEMA number |
3266 |
| COE number |
2337 |
| FLAVIS number |
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| Molecular weight |
102.15 |
| Chemical formula |
C4H6OS |
| Physical form/odour |
colourless to yellow liquid with garlic, meaty, green vegetable, buttery odour |
| Solubility |
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| Solubility in ethanol |
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| Boiling point (°C) |
174-175°; 73° (15 mm Hg) ; 86-87° (25 mm Hg) |
| Assay min % |
97% |
| Acid value max |
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| Refractive index |
1.527-1.531 |
| Specific gravity |
1.194-1.199 (20°) |
| Other requirements |
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| 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/img_add8/498.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/img_add8/498.gif" width="60px;"></a><br>&dname=<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/img_add8/498.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/img_add8/498.gif" width="60px;"></a><br> "Download")
![](fileadmin/user_upload/jecfa/img/<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/img_add8/498.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/img_add8/498.gif" width="60px;"></a><br>)