Chemistry of Essential Oils

352 THE CHEMISTEY OF ESSENTIAL OILS

Specific gravity

Optical rotation

Refractive index

Ester value

Yield

0'8756

+ 22'9°

1-4788 at 16°

10-5

0-25 per cent.

It contains d-pinene, aromadendrene, traces of eucalyptol, and acetic

esters. Cymene is probably present.

OIL OF EUCALYPTUS CAMBAGEI.

This tree is another of the so-called Bastard Boxes of New South

Wales and Victoria. The oil has the following characters :—

Specific gravity 0-919 to 0-921

Optical rotation - 0-6° „ + 5-6°

Refractive index 1-4720 at 16°

Yield 0'83 per cent.

It contains eucalyptol, pinene, aromadendral, and eudesmol.

OIL OF EUCALYPTUS CAMPANULATA.

This tree is the Bastard Stringy Bark of New South Wales. The

oil contains eucalyptol, piperitone, and eudesmol, with a large amount

of phellandrene, and has the following characters:—

Specific gravity 0-8804

Optical rotation - 25-8°

Refractive index 1-4856 at 18°

Saponification value 7-6

Yield 0-85 per cent.

OIL OF EUCALYPTUS CAMPHOBA.

This tree is the Swamp Gum of Victoria and New South Wales.

Its oil has the following characters :— *

Specific gravity 0-9071

Optical rotation + 1-3°

Refractive index 1-4733 at 16°

Saponification value 4-4

Yield 1-34 per cent.

The oil contains 50 per cent, of eucalyptol, pinene, and eudesmoL

OIL OF EUCALYPTUS CAPITELLATA.

This oil has the following characters :—

Specific gravity 0-9175

Optical rotation + 4-4°

Saponification value ........ 4-2

Refractive index 1-4772 at 20°

Eucalyptol 28 per cent.

Yield 01,,

It contains eucalyptol, pinene, phellandrene, and a sesquiterpene.

OIL OF EUCALYPTUS CAENEA.
This oil has only been partially examined. It consists chiefly of
d-a-pinene with traces of eucalyptol.