Food safety and quality: details

Flavouring	2-Butyl-5- or 6-keto-1,4-dioxane
Synonym(s)	5(or 6)-Butyl-1,4-dioxan-2-one
Latest JECFA evaluation	2005 (Session 65)
Status of specification	Full
Information required
Chemical name	2-Butyl-5 or 6-keto-1,4-dioxane
JECFA number	1484
CAS number	65504-95-2
FEMA number	2204
COE number
FLAVIS number	13.028
Molecular weight	158.2
Chemical formula	C8H14O3
Physical form/odour	Colourless liquid; Powerful fruity aroma
Solubility	Slightly soluble in water
Solubility in ethanol	Soluble
Boiling point (°C)	98-99° (13 mm Hg)
Assay min %	97%
Acid value max
Refractive index	1.472-1.478
Specific gravity	1.292-1.296
Other requirements	[Lactone undergoes ring opening in basic solution]
ID Test	NMR
Spectrum