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Online Edition: "Specifications for Flavourings"

Flavouring Isopropyl isobutyrate
Synonym(s) Isopropyl 2-methyl propanoate
Latest JECFA evaluation 1998 (Session 51)
Status of specification Full
Chemical name Isopropyl 2-methylpropanoate
JECFA number 309
CAS number 617-50-5
FEMA number 2937
COE number 290
FLAVIS number
Molecular weight 130.18
Chemical formula C7H14O2
Physical form/odour colourless to pale yellow liquid
Solubility insoluble in water; soluble in most organic solvents
Solubility in ethanol
Boiling point (°C) 121°
Assay min % 95.0%
Acid value max
Refractive index 1.394-1.399
Specific gravity 0.845-0.850
Other requirements
ID Test IR