Food safety and quality: details

Flavouring	Mixture of 3-Hydroxy-5-methyl-2-hexanone and 2-Hydroxy-5-methyl-3-hexanone
Synonym(s)
Latest JECFA evaluation	2010 (Session 73)
Status of specification	Full
Information required
Chemical name	Mixture of 3-hydroxy-5-methylhexan-2-one and 2-hydroxy-5-methylhexan-3-one
JECFA number	2034
CAS number	163038-04-8;246511-74-0
FEMA number	3989
COE number
FLAVIS number
Molecular weight	130.18
Chemical formula	C7H14O2
Physical form/odour	Colourless liquid; Sweet, chocolate-like aroma
Solubility	Soluble in water
Solubility in ethanol	Soluble
Boiling point (°C)	39-41° (0.06 mm Hg)
Assay min %	97%
Acid value max
Refractive index	1.424-1.434
Specific gravity	0.922-0.932
Other requirements	Mixture: 77% 3-Hydroxy-5-methyl-2-hexanone; 20% 2-Hydroxy-5-methyl-3-hexanone
ID Test	HNMR IR MS
Spectrum