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Food safety and quality
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| Flavouring |
2-Isobutyl-3-methylpyrazine |
| Synonym(s) |
2-Methyl-3-isobutylpyrazine;2-(2-Methylpropyl)-3-methylpyrazine;2-Isobutyl-3-methyl-1,4-diazine |
| Latest JECFA evaluation |
2001 (Session 57) |
| Status of specification |
Full |
| Information required |
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| Chemical name |
2-Isobutyl-3-methylpyrazine |
| JECFA number |
773 |
| CAS number |
13925-06-9 |
| FEMA number |
3133 |
| COE number |
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| FLAVIS number |
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| Molecular weight |
150.22 |
| Chemical formula |
C9H14N2 |
| Physical form/odour |
colourless to slightly yellow liquid with a green, earthy, celery odour |
| Solubility |
soluble in water, oils, organic solvents |
| Solubility in ethanol |
miscible at room temperature |
| Boiling point (°C) |
199° |
| Assay min % |
98% |
| Acid value max |
|
| Refractive index |
1.488-1.498 |
| Specific gravity |
0.936-0.942 |
| 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/773.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/773.gif" width="60px;"></a><br>&dname=<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/773.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/773.gif" width="60px;"></a><br> "Download")
![](fileadmin/user_upload/jecfa/img/<a href="http://www.fao.org/fileadmin/user_upload/jecfa/img/773.gif" target=_blank><img src="http://www.fao.org/fileadmin/user_upload/jecfa/img/773.gif" width="60px;"></a><br>)