Food safety and quality: details

Flavouring	Theaspirane
Synonym(s)
Latest JECFA evaluation	2016 (Session 82)
Status of specification	Full
Information required
Chemical name	2,6,10,10-Tetramethyl-1-oxaspiro[4.5]dec-6-ene
JECFA number	1238
CAS number	36431-72-8
FEMA number	3774
COE number
FLAVIS number	13.098
Molecular weight	194.32
Chemical formula	C13H22O
Physical form/odour	Colourless liquid
Solubility	Insoluble in water, soluble in fats
Solubility in ethanol	soluble
Boiling point (°C)	65° (1 mm Hg)
Assay min %	85% (minimum; sum of stereoisomers)
Acid value max	1
Refractive index	1.475-1.495
Specific gravity	0.926-0.958
Other requirements	Isomeric composition: E: 47-52% Z: 36-41%; SC: 1% 6-methylidene-2,10,10-trimethyl-1-oxaspiro[4.5]decane; 4-5% 4,6,10,10-Tetramethyl-5-oxabicyclo[4.4.0]dec-1-ene; 1-1.5% 2-(1,3-Butadienyl)-1,3,3-trimethyl-1-cyclohexene; 1.5-2% 6-(2-Butenylidene)-1,5,5-trimethyl-1-cyclohexene; Approx. 1% 3,4-Dihydro-1,1,6-trimethyl-(2H)-naphthalene
ID Test	HNMR IR MS
Spectrum