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Food safety and quality
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| Flavouring |
4,5-Dimethyl-3-hydroxy-2,5-dihydrofuran-2-one |
| Synonym(s) |
2,3-Dimethyl-4-hydroxy-2,5-dihydrofuran-5-one |
| Latest JECFA evaluation |
2000 (Session 55) |
| Status of specification |
Full |
| Information required |
|
| Chemical name |
2-Hydroxy-3-methyl-2-penten-4-olide;3-Hydroxy-4,5-dimethyl-2(5)-furanone |
| JECFA number |
243 |
| CAS number |
28664-35-9 |
| FEMA number |
3634 |
| COE number |
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| FLAVIS number |
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| Molecular weight |
128.13 |
| Chemical formula |
C6H8O3 |
| Physical form/odour |
clear, yellow liquid |
| Solubility |
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| Solubility in ethanol |
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| Boiling point (°C) |
81° (6 mm Hg) |
| Assay min % |
97.5% |
| Acid value max |
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| Refractive index |
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| Specific gravity |
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| Other requirements |
Melting point c.25° |
| 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/243.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/243.gif" width="60px;"></a><br>&dname=<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/243.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/243.gif" width="60px;"></a><br> "Download")
![](fileadmin/user_upload/jecfa/img/<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/243.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/243.gif" width="60px;"></a><br>)