OVERVIEW
Para-cymene, a naturally occurring aromatic organic compound, is a monoterpene with the chemical formula C10H14. It is also referred by other names such as p-cymene, cymol, p-cymol, p-methylcumene, camphogen and 4-cymene. Its structure consists of a benzene ring para-substituted with a methyl group and an isopropyl group.
It is transparent liquid, optically inactive, found in essential oils, possessing an odour typical of the aromatic hydrocarbons. It is characterised by pleasant fresh citrus fragrance.It floats on water and it mixes well with ethanol and diethyl ether.
Para-cymene occurs in numerous volatile oils— for example, in Swedish and Russian turpentine oil, in oil of lemon, sage, thymol, coriander, cumin, ajowan, nutmeg, origanum, savoury, star anise, cinnamon, etc. Also, the so-called commercial “thymene” consists mainly of p-cymene.
APPEARANCE
Colourless mobile liquid
ODOUR
Citrus, mild, pleasant odour
IUPAC NAME
1-Methyl-4-(propan-2-yl)benzene
CAS NUMBER
99-87-6
FEMA NUMBER
2356
EINECS NUMBER
202-796-7
PRODUCT CODE
AFA002022
SYNONYM
1-Isopropyl-4-methylbenzene, 4-Isopropyltoluene
SHELF LIFE
12 months
LOGP
4.1
FLASHPOINT
80°C
SPECIFIC GRAVITY
0.853-0.859 @ 25°C
REFRACTIVE INDEX
1.484-1.491 @ 20°C
MOLECULAR WEIGHT
134.222 g/mol
PURITY (GLC)
97% Minimum
BOILING POINT
177°C
QUALITY
100% Pure and Natural
SOLUBILITY
Soluble in alcohols and oils; Insoluble in water