Food safety and quality
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Flavouring |
4-(2-Butenylidene)-3,5,5-trimethylcyclohex-2-en-1-one (mixture of isomers) |
Synonym(s) |
Megastigmatrienone;2-Cyclohexen-1-one, 4-(2-butenylidene)-3,5,5-trimethyl- |
Latest JECFA evaluation |
2010 (Session 73) |
Status of specification |
Full |
Information required |
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Chemical name |
Mixture of (E)-4-((E)-but-2-en-1-ylidene)-3,5,5-trimethylcyclohex-2-enone and (E)-4-((Z)-but-2-en-1-ylidene)-3,5,5-trimethylcyclohex-2-enone |
JECFA number |
2057 |
CAS number |
13215-88-8 |
FEMA number |
4663 |
COE number |
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FLAVIS number |
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Molecular weight |
190.28 |
Chemical formula |
C13H18O |
Physical form/odour |
Clear to pale yellowish liquid; Fruity floral tobacco-like aroma |
Solubility |
Practically insoluble or insoluble in water |
Solubility in ethanol |
Soluble |
Boiling point (°C) |
95-110° (< 1 mm Hg) |
Assay min % |
95% |
Acid value max |
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Refractive index |
1.536-1.556 |
Specific gravity |
0.985-1.005 |
Other requirements |
Mixture of isomers: (50% E,E; 50% E,Z); SC: 5-6% 4,7,9-Megastigmatrien-3-one |
ID Test |
HNMR IR MS |
Spectrum |
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