Food safety and quality: details

Flavouring	4-Hydroxy-4-methyl-5-hexenoic acid gamma lactone
Synonym(s)	4-Methyl-5-hexen-1,4-olide;Lilac lactone;5-Methyl-5-vinyl-dihydro-furan-2-one
Latest JECFA evaluation	2003 (Session 61)
Status of specification	Full
Information required
Chemical name	5-Ethinyldihydro-5-methyl-2(3H)-furanone
JECFA number	1157
CAS number	1073-11-6
FEMA number	4051
COE number
FLAVIS number
Molecular weight	126.15
Chemical formula	C7H10O2
Physical form/odour	Clear, colourless liquid; floral aroma
Solubility	Insoluble in water; soluble in nonpolar solvents
Solubility in ethanol	soluble
Boiling point (°C)	219°
Assay min %	97%
Acid value max	1
Refractive index	1.457-1.462
Specific gravity	1.015-1.025 (20°)
Other requirements
ID Test	CNMR HNMR IR
Spectrum