Chemistry of Essential Oils

MYRTACEJE 373

culated as geranyl acetate, or 8

*

32 per cent, on the original oil. An

ester determination on the original oil gave 8'6 per cent.

A portion of the non-aldehydic oil was acetylated in the usual way,

and this gave a saponification number 78*47, which represents 15'14

per cent, of free alcohol, or 12*72 per cent, of geraniol in the original oil.

The oil of Eucalyptus Staigeriatia may be stated to have approxi-

mately the following constitution :—

Limonene

Geraniol

Geranyl acetate

Citral

Undetermined

60-00 per cent.

12-72

8-32

16*00

2-96

100-00

OIL OF EUCALYPTUS STELLULATA.

This oil has the following characters:—

Specific gravity 0-871

Optical rotation - 26*1°

Refractive index.1 '4902 at 16°

Yield 0-3 per cent.

It contains phellandrene, a sesquiterpene, and traces of eucalyptol.

OIL OF EUCALYPTUS STEICTA.

This oil has the following characters :—

Specific gravity 0*9246

Optical rotation - 3*4°

Refractive index 1-4711 at 16°

Yield 0*5 per cent.

It contains pinene, eucalyptol, and eudesmol.

OIL OF EUCALYPTUS STUAKTIANA.

This oil has the following characters :—

Specific gravity ........ 0*916

Optical rotation + 4*7°

Refractive index 1-4790 at 16°

Yield 0-4 per cent.

It contains about 50 per cent..of eucalyptol, pinene, and some esters.

OIL OF EUCALYPTUS T^ENIOLA.
This oil has the following characters :—•
Specific gravity 0-8864
Optical rotation - 27-6°
Refractive index 1-4872 at 17°
Yield 0-66 per cent.
It contains 7 per cent, of eucalyptol, phellandrene, eudesmol,
piper itone, and a sesquiterpene.

OIL OF EUCALYPTUS TERETICOKNIS.

This oil has the following characters:—

Specific gravity 0*9218

Optical rotation - 9 *3°

Refractive index.. 1*4934 at 16°

Yield 0-48 per cent.