Food safety and quality: details

Flavouring	5-Hydroxy-4-methylhexanoic acid delta-lactone
Synonym(s)	5,6-Dimethyltetrahydropyran-2-one;4-Methyl-5-hydroxyhexanoic acid lactone;Hexanoic acid, 5-hydroxyl-4-methyl-, delta-lactone
Latest JECFA evaluation	2010 (Session 73)
Status of specification	Full
Information required
Chemical name	5,6-dimethyltetrahydro-2H-pyran-2-one
JECFA number	1990
CAS number	10413-18-0
FEMA number	4141
COE number
FLAVIS number
Molecular weight	128.17
Chemical formula	C7H12O2
Physical form/odour	Colourless to yellow liquid; Minty fruit-like aroma
Solubility	Slightly soluble in water
Solubility in ethanol	Soluble
Boiling point (°C)	59-60° (1.9 mm Hg)
Assay min %	96%
Acid value max
Refractive index	1.452-1.458
Specific gravity	1.020-1.242
Other requirements
ID Test	HNMR IR MS
Spectrum