Food safety and quality
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Flavouring |
3,5-Undecadien-2-one |
Synonym(s) |
3,5-undeca-3,5-dien-2-one |
Latest JECFA evaluation |
2016 (Session 82) |
Status of specification |
Full |
Information required |
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Chemical name |
(3E,5E)-undeca-3,5-dien-2-one |
JECFA number |
2219 |
CAS number |
68973-20-6 |
FEMA number |
4746 |
COE number |
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FLAVIS number |
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Molecular weight |
166.14 |
Chemical formula |
C11H18O |
Physical form/odour |
Clear, colourless to slightly yellow liquid / Cucumber, green, tallow, fatty, fruity |
Solubility |
sparingly soluble |
Solubility in ethanol |
Soluble |
Boiling point (°C) |
253-254° |
Assay min % |
>95% (mixture of isomers) |
Acid value max |
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Refractive index |
1.518-1.522 |
Specific gravity |
0.794- 0.914 |
Other requirements |
Isomeric composition: 89-94% 3E,5E; 6-11% sum of 3E,5Z; 3Z,5Z; and 3Z,5E |
ID Test |
HNMR |
Spectrum |
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