Food safety and quality: details

Flavouring	Farnesene (alpha and beta)
Synonym(s)
Latest JECFA evaluation	2004 (Session 63)
Status of specification	Full
Information required
Chemical name	Mixture of 3,7,11-Trimethyldodeca-1,3,6,10-tetraene and 3-Methylene-7,11-dimethyldodeca-1,6,10-triene
JECFA number	1343
CAS number	CAS Nos: 502-61-4 (alpha); 18794-84-8 (beta); 688330-26-9 (mixture)
FEMA number	3839
COE number
FLAVIS number	01.040
Molecular weight	204.36
Chemical formula	C15H24
Physical form/odour	Colourless to pale green-yellow liquid; fruity aroma
Solubility	Insoluble in water; soluble in benzene, pet ether
Solubility in ethanol	Slightly soluble
Boiling point (°C)	53-57° (1 mm Hg)
Assay min %	38% alpha + 29% beta (sum of cis/trans isomers)
Acid value max
Refractive index	1.490-1.500
Specific gravity	0.834-0.845
Other requirements	SC: bisabolene, up to 10% other isomers (valencene, bourbonene, cadinene, guaiene)
ID Test	NMR
Spectrum