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Food safety and quality
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| Flavouring |
alpha-Irone |
| Synonym(s) |
6-Methyl-alpha-ionone;cis-(2,6)-cis-(2,2)-alpha-Irone |
| Latest JECFA evaluation |
1998 (Session 51) |
| Status of specification |
Full |
| Information required |
|
| Chemical name |
4-(2,5,6,6-Tetramethyl-2-cyclohexen-1-yl)-3-buten-2-one |
| JECFA number |
403 |
| CAS number |
79-69-6 |
| FEMA number |
2597 |
| COE number |
145 |
| FLAVIS number |
|
| Molecular weight |
206.33 |
| Chemical formula |
C14H22O |
| Physical form/odour |
colourless to pale yellow liquid |
| Solubility |
|
| Solubility in ethanol |
1 ml in 4 ml 70% alcohol |
| Boiling point (°C) |
110 -112° (3.2 mm Hg) |
| Assay min % |
98.0% |
| Acid value max |
|
| Refractive index |
1.497-1.503 |
| Specific gravity |
0.932-0.939 |
| Other requirements |
Optical rotation: +22° (60°) |
| ID Test |
IR |
| Spectrum |
 
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