Food safety and quality
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Flavouring |
1-Methyl-2,3-cyclohexadione |
Synonym(s) |
3,5,5-Trimethyl-1,2-cyclohexanedione;2-Hydroxyisophorone |
Latest JECFA evaluation |
1998 (Session 51) |
Status of specification |
Full |
Information required |
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Chemical name |
1-Methylcyclohexa-2,3-dione |
JECFA number |
425 |
CAS number |
3008-43-3 |
FEMA number |
3305 |
COE number |
2311 |
FLAVIS number |
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Molecular weight |
126.16 |
Chemical formula |
C7H10O2 |
Physical form/odour |
off white to light yellowish-brown powder with a burnt, sweet odour |
Solubility |
insoluble in water |
Solubility in ethanol |
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Boiling point (°C) |
69-72° (1 mm Hg) |
Assay min % |
98.0% |
Acid value max |
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Refractive index |
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Specific gravity |
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Other requirements |
Melting range 57-63° |
ID Test |
IR |
Spectrum |
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