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Online Edition: "Specifications for Flavourings"

Flavouring Isobutyl isobutyrate
Latest JECFA evaluation 1997 (Session 49)
Status of specification Full
Chemical name 2-Methylpropyl 2-methyl propanoate
JECFA number 194
CAS number 97-85-8
FEMA number 2189
COE number 292
FLAVIS number
Molecular weight 144.21
Chemical formula C8H16O2
Physical form/odour colourless to pale yellow liquid/pineapple odour
Solubility soluble in organic solvents; insoluble in water
Solubility in ethanol
Boiling point (°C) 144-151°
Assay min % 98.0%
Acid value max 1
Refractive index 1.396-1.402
Specific gravity 0.850-0.857
Other requirements Melting Pt.: -80° to -81°
ID Test IR