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Online Edition: "Specifications for Flavourings"

Flavouring 2,3-Hexanedione
Synonym(s) Acetyl-n-butyryl;Methyl propyl diketone
Latest JECFA evaluation 2000 (Session 55)
Status of specification Full
Chemical name Hexane-2,3-dione
JECFA number 412
CAS number 3848-24-6
FEMA number 2558
COE number 152
FLAVIS number
Molecular weight 114.14
Chemical formula C6H10O2
Physical form/odour yellow, oily liquid with a butter-sweet odour
Solubility slightly soluble in water; soluble in propylene glycol, alcohol, and oils
Solubility in ethanol
Boiling point (°C) 128°
Assay min % 93% (min. 98% named cpd + methylpentanediones)
Acid value max
Refractive index 1.409-1.419
Specific gravity 0.930-0.950
Other requirements
ID Test IR