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Flavouring Isoamyl 2-methylbutyrate
Synonym(s) Isoamyl 2-methyl butanoate
Latest JECFA evaluation 2001 (Session 57)
Status of specification Full
Chemical name 3-Methylbutyl 2-methylbutanoate
JECFA number 51
CAS number 27625-35-0  
FEMA number 3505
COE number 10721
FLAVIS number -
Molecular weight 172.27 
Chemical formula C10H20O2  
Physical form/odour colourless liquid with a fruity odour 
Solubility soluble in ethanol and oil, insoluble in water 
Solubility in ethanol -
Boiling point (°C) 70-71 (8 mm Hg)
Assay min % 95
Acid value max -
Refractive index 1.4124
Specific gravity 0.852-0.861
Other requirements -
ID Test IR
Spectrum http://www.fao.org/ag/agn/jecfa-flav/img/img/51.gif



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