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Food safety and quality
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| Flavouring |
Isoamyl pyruvate |
| Synonym(s) |
Isopentyl pyruvate;Isoamyl pyroracemate |
| Latest JECFA evaluation |
2001 (Session 57) |
| Status of specification |
Full |
| Information required |
|
| Chemical name |
3-Methylbutyl 2-oxopropanoate |
| JECFA number |
939 |
| CAS number |
7779-72-8 |
| FEMA number |
2083 |
| COE number |
431 |
| FLAVIS number |
|
| Molecular weight |
158.2 |
| Chemical formula |
C8H14O3 |
| Physical form/odour |
colourless liquid with a fresh, caramel-rum odour with fruity-floral undertone |
| Solubility |
insoluble in water; soluble in organic solvents, oils |
| Solubility in ethanol |
miscible at room temperature |
| Boiling point (°C) |
185° |
| Assay min % |
97% |
| Acid value max |
2 |
| Refractive index |
1.417-1.424 |
| Specific gravity |
0.972-0.980 |
| 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/939.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/939.gif" width="60px;"></a><br>&dname=<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/939.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/939.gif" width="60px;"></a><br> "Download")
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