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Online Edition: "Specifications for Flavourings"

Flavouring Isoamyl acetoacetate
Synonym(s) Isobutyl beta-ketobutyrate;Isobutyl 3-oxobutanoate;Isoamyl beta-ketobutyrate;Isoamyl 3-oxobutanoate
Latest JECFA evaluation 2000 (Session 55)
Status of specification Full
Chemical name 3-Methylbutyl 3-oxobutyrate
JECFA number 598
CAS number 2308-18-1
FEMA number 3551
COE number 227
FLAVIS number
Molecular weight 172.23
Chemical formula C9H16O3
Physical form/odour colourless liquid; ethereal, fruity, somewhat herbaceous, winey, fermented apple-like odour
Solubility insoluble in water; soluble in alcohol
Solubility in ethanol
Boiling point (°C) 222-224°
Assay min % 97%
Acid value max
Refractive index 1.426-1.433
Specific gravity 0.954 (10°)
Other requirements
ID Test IR
Spectrum