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Online Edition: "Specifications for Flavourings"

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
Chemical name (3E,5E)-undeca-3,5-dien-2-one
JECFA number 2219
CAS number 68973-20-6
FEMA number 4746
COE number
FLAVIS number
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
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