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Online Edition: "Specifications for Flavourings"

Flavouring Allyl-alpha-ionone
Synonym(s) Allyl Ionone
Latest JECFA evaluation 2001 (Session 57)
Status of specification Full
Chemical name 1-(2,6,6-Trimethyl-2-cyclohexenyl)-1,6-heptadien-3-one
JECFA number 401
CAS number 79-78-7
FEMA number 2033
COE number 2040
FLAVIS number
Molecular weight 232.37
Chemical formula C16H24O
Physical form/odour colourless to yellow liquid with a fruity, woody odour
Solubility soluble in alcohol; insoluble in water
Solubility in ethanol 1 ml in 1 ml 90% alcohol; 1 ml in 8 ml 70% alcohol
Boiling point (°C) 265°
Assay min % 88% (min. 95% sum of isomers)
Acid value max
Refractive index 1.502-1.507
Specific gravity 0.926-0.935
Other requirements Allyl alcohol <=0.1%
ID Test IR