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Online Edition: "Specifications for Flavourings"

Flavouring Prenyl isobutyrate
Latest JECFA evaluation 2008 (Session 69)
Status of specification Full
Chemical name 2-Methylpropanoic acid 3-methyl-2-butenyl ester
JECFA number 1828
CAS number 76649-23-5
FEMA number 4206
COE number
FLAVIS number 09.695
Molecular weight 156.22
Chemical formula C9H16O2
Physical form/odour Colourless liquid; Fruity buttery aroma
Solubility Practically insoluble to insoluble in water
Solubility in ethanol Soluble
Boiling point (°C) 77-78° (15 mmHg)
Assay min % 99%
Acid value max
Refractive index 1.427-1.434
Specific gravity 0.887-0.896
Other requirements
ID Test MS