Food safety and quality
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Flavouring |
(E)-7-Methyl-3-octen-2-one |
Synonym(s) |
trans-7-Methyl-3-octen-2-one |
Latest JECFA evaluation |
2002 (Session 59) |
Status of specification |
Full |
Information required |
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Chemical name |
(E)-7-Methyloct-3-en-2-one |
JECFA number |
1135 |
CAS number |
33046-81-0 |
FEMA number |
3868 |
COE number |
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FLAVIS number |
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Molecular weight |
140.2 |
Chemical formula |
C9H16O |
Physical form/odour |
Colourless liquid; fruity-floral aroma |
Solubility |
slightly soluble in water; soluble in oils |
Solubility in ethanol |
Miscible at room temperature |
Boiling point (°C) |
198° |
Assay min % |
94% |
Acid value max |
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Refractive index |
1.446-1.451 |
Specific gravity |
0.838-0.847 |
Other requirements |
SC: 7-Methyl-4-octen-2-one; 5,6-Dimethyl-3-hepten-2-one; 3-Nonen-2-one |
ID Test |
MS IR NMR |
Spectrum |
![](https://www.fao.org/fileadmin/user_upload/jecfa/img/1135.gif)
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