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Online Edition: "Specifications for Flavourings"

Flavouring 2-Methylpropyl 3-methylbutyrate
Synonym(s) Isobutyl isovalerate
Latest JECFA evaluation 1997 (Session 49)
Status of specification Full
Chemical name 2-Methylpropyl 3-methylbutanoate
JECFA number 203
CAS number 589-59-3
FEMA number 3369
COE number 568
FLAVIS number
Molecular weight 158.24
Chemical formula C9H18O2
Physical form/odour colourless to pale yellow liquid
Solubility miscible with alcohol
Solubility in ethanol
Boiling point (°C) 170°
Assay min % 98.0%
Acid value max 1
Refractive index 1.404-1.408
Specific gravity 0.850-0.854
Other requirements
ID Test IR