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Online Edition: "Specifications for Flavourings"

Flavouring Butyl levulinate
Synonym(s) n-Butyl levulinate;n-Butyl gamma-ketovalerate;n-Butyl acetopropionate
Latest JECFA evaluation 2002 (Session 59)
Status of specification Full
Chemical name Butyl 4-oxovalerate
JECFA number 608
CAS number 2052-15-5
FEMA number 2207
COE number 374
FLAVIS number
Molecular weight 172.23
Chemical formula C9H16O3
Physical form/odour colourless or straw-colored liquid; sweet and slightly pungent caramellic odour with fruity undertones; mild sweet caramellic-herbaceous taste; bitter taste
Solubility slightly soluble in water; soluble in oil and alcohol
Solubility in ethanol
Boiling point (°C) 238°
Assay min % 97%
Acid value max 1
Refractive index 1.423-1.433
Specific gravity 0.967-0.977
Other requirements
ID Test IR
Spectrum