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Online Edition: "Specifications for Flavourings"

Flavouring 5-Ethyl-2-hydroxy-3-methylcyclopent-2-en-1-one
Synonym(s) 1,2-Cyclohexanedione
Latest JECFA evaluation 2003 (Session 61)
Status of specification Full
Chemical name 5-Ethyl-2-hydroxy-3-methylcyclopent-2-en-1-one
JECFA number 423
CAS number 53263-58-4
FEMA number 3454
COE number 11078
FLAVIS number 07.118
Molecular weight 140.18
Chemical formula C8H12O2
Physical form/odour
Solubility slightly soluble in water; soluble in ethanol, fat, propylene glycol
Solubility in ethanol
Boiling point (°C)
Assay min % 99%
Acid value max
Refractive index 1.478-1.484
Specific gravity 1.053-1.060
Other requirements
ID Test NMR
Spectrum