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Online Edition: "Specifications for Flavourings"

Flavouring Piperitone
Synonym(s) 6-isopropyl-3-methylcyclohex-2-enone;4-Isopropyl-1-methyl-1-cyclohexen-3-one
Latest JECFA evaluation 2003 (Session 61)
Status of specification Full
Chemical name p-Menth-1-en-3-one
JECFA number 435
CAS number 6091-50-5
FEMA number 2910
COE number 2052
FLAVIS number 07-175
Molecular weight 152.24
Chemical formula C10H16O
Physical form/odour clear, light yellowish to yellow liquid
Solubility insoluble in water; soluble in alcohol
Solubility in ethanol
Boiling point (°C) 233-235°
Assay min % 94%
Acid value max
Refractive index 1.483-1.487
Specific gravity 0.929-0.934
Other requirements mp (l-isomer): -29°; optical Rotation: d-,+ 49° at 20°; l-, - 67° to - 51°; SC: menthol, menthone
ID Test IR
Spectrum