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Online Edition: "Specifications for Flavourings"

Flavouring 6,10-Dimethyl-5,9-undecadien-2-one
Synonym(s) Geranylacetone;2,6-Dimethyl-2,6-undecadien-10-one
Latest JECFA evaluation 2016 (Session 82)
Status of specification Full
Chemical name 6,10-Dimethylundeca-5,9-dien-2-one
JECFA number 1122
CAS number 689-67-8
FEMA number 3542
COE number 11088
FLAVIS number 07.123
Molecular weight 194.32
Chemical formula C13H22O
Physical form/odour Colourless slightly yellow liquid; fresh floral but penetrating sweet-rosey aroma
Solubility slightly soluble in water; soluble in oil
Solubility in ethanol sparingly soluble
Boiling point (°C) 247°
Assay min % 95% (sum of isomers)
Acid value max 5
Refractive index 1.462-1.472
Specific gravity 0.861-0.873
Other requirements Isomeric composition: Z: 37-48%; E: 52-62%