Chemistry of Essential Oils

(Tuis.) #1

MYRTACE^E 375


OIL OF EUCALYPTUS VEBNICOSA.
This oil has the following characters :—
Specific gravity 0-9038
Optical rotation +11-3°
Refractive index 1-4651 at 18a
Yield 0-8 per cent.
It contains about 60 per cent, of eucalyptol, and pinene.
OIL OF EUCALYPTUS VIMINAHS.
This tree is found in most of the Australasian Colonies. The oil
has the following characters:—
Specific gravity 0-904 to 0-916
Optical rotation ..... + 3-6° „ + 4-2°
Refractive index 1-4799 to 1-4840 at 20°
Eucalyptol. 35 per cent.
Yield.0-35 to 0-74 per cent.
It contains eucalyptol, phellandrene, aromadendrene, and d-pinene.
OIL OF EUCALYPTUS VIRGATA.
This oil has the following characters :—
Specific gravity 0-888 to 0-915
Optical rotation - 20-9° „ - 35-8
°
Refractive index 1-5015 at 16°
It contains about 20 per cent, of eucalyptol, and Z-phellandrene.


OIL OF EUCALYPTUS VIRIDIS.
This oil has the following characters :—
Specific gravity 0'9006
Optical rotation - 8°
Refractive index 1*4828 at 16*
Yield 1-06 per cent.
It contains eucalyptol, Z-pinene, and aromadendral.

OIL OF EUCALYPTUS VITBEA.
This oil has the following characters :—
Specific gravity 0'886
Optical rotation + 29'8°
Refractive index 1*4828 at 16°
Yield 1'48 per cent.
It contains phellandrene, eucalyptol, a sesquiterpene, piperitone,
and citral (?).
OIL OF EUCALYPTUS WILKINSONIANA.
This oil has the following values:—
Specific gravity 0-8944
Optical rotation - 23-9°
Refractive index 1-4774 at 16°
Yield 0-975 per cent.
It contains Z-pinene and eucalyptol.

OIL OF EUCALYPTUS WOOLLSIANA.
This oil has the following characters :—
Specific gravity 0-889 to 0-905
Optical rotation. - 9-5° „ - 16°
Refractive index 1-4839 to 1-4880 at 20°
Yield 0-5 per cent.
It contains pinene, aromadendral, and eucalyptol.
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