|
Food safety and quality
|
|
|
| |
| Flavouring |
Isobutyric acid |
| Synonym(s) |
Isopropyl formic acid |
| Latest JECFA evaluation |
1998 (Session 51) |
| Status of specification |
Full |
| Information required |
|
| Chemical name |
2-Methylpropionic acid |
| JECFA number |
253 |
| CAS number |
79-31-2 |
| FEMA number |
2222 |
| COE number |
6 |
| FLAVIS number |
|
| Molecular weight |
88.11 |
| Chemical formula |
C4H8O2 |
| Physical form/odour |
colourless liquid with a strong penetrating odour of rancid butter |
| Solubility |
miscible with alcohol, most fixed oils, glycerine and propylene glycol; insoluble in water |
| Solubility in ethanol |
|
| Boiling point (°C) |
155° |
| Assay min % |
99.0% |
| Acid value max |
|
| Refractive index |
1.392-1.395 |
| Specific gravity |
0.944-0.948 |
| Other requirements |
Reducing Substances: passes test |
| 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/253.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/253.gif" width="60px;"></a><br>&dname=<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/253.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/253.gif" width="60px;"></a><br> "Download")
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