364: THE CHEMISTEY OF ESSENTIAL OILS
OIL OF EUCALYPTUS OBEADES.
This oil has the following characters :—
Specific gravity 0-887
Optical rotation - 22-8°
Refractive index 1-4945 at 20°
Yield 1*16 per cent.
It contains phellandrene, piperitone, and eudesmol.
OIL OF EUCALYPTUS OVAFOLIA.
This oil has the following characters :—
Specific gravity..0-9058
Optical rotation -9°
Refractive index 1-4921 at 16°
Yield 0-27 per cent.
It contains phellandrene, pinene, eucalyptol, and a sesquiterpene.
OIL OF EUCALYPTUS PALUDOSA.
This tree occurs in New South Wales, Victoria, and Tasmania. The
oil has the following characters:—
Specific gravity 0'902 to 0'9056
Optical rotation + 9'9° „ + 14-2°
Refractive index 1-4773 at 16°
Yield 0-243 per cent.
It contains pinene, eucalyptol, a sesquiterpene, and a valerianic
ester.
OIL OF EUCALYPTUS PANICULATA.
This tree is a " White Iron Bark" found in most of the colonies.
Its oil has the following characters:—
Specific gravity 0-901
Optical rotation + 7-8°
Refractive index 1-4801 at 16°
Yield 0-1 per cent.
It contains eucalyptol, aromadendrene, aromadendral, and an alcohol
not yet identified.
OIL OF EUCALYPTUS PATENTINERVIS.
This tree is known in New South Wales as a Bastard Mahogany.
The following are the characters of the oil:—
Specific gravity......... 0'8735
Optical rotation - 15-7°
Refractive index 1-4948 at 16°
It contains limonene, a sesquiterpene, and citral.
OIL OF EUCALYPTUS PENDULA.
This oil has the following characters :—
Specific gravity ........ 0-9155
Optical rotation ........ + 5'3°
Refractive index 1-4732 at 16°
Yield 0-84 per cent.
It contains about 50 per cent, of eucalyptol, pinene, and aroma-
dendrene.
