Chemistry of Essential Oils

48 THE CHEMISTEY OF ESSENTIAL OILS

Specific

Gravity, ° C.

0-8481 @ 22

0-8563 @ 23

Rotation,

«D.

• 21-6

—

Refractive

Index, ° C.

1-4768,® 22

1-4755 ® 19

Ester,

per Cent.

3-81

4-75

Yield,

per Cent.

0-11

CALLITRIS GRACILIS.

The leaf oil of this tree contains about 12 per cent, of esters (acetic-

and butyric) of borneol, terpineol, and, probably, geraniol. Pinene is

the principal terpene, and traces of a phenol are present. The oil has

the following characters :•—

Specific gravity

Rotation

Refractive index

Esters.

Yield.

0-8683 at 20°

+ 8-7J

1-4752 at 20°

12*1 per cent.

0-723 „

CALLITRIS CALCARATA.

Both forms of limonene are present in the leaf oil as well as dextro-

pinene. The oil contains 46'8 per cent, of esters, both of geraniol and

borneol, the former preponderating. The oil from the fruits is prac-

tically identical with that from the leaves, the samples examined having

the following characters :—

OLLS FROM THE LEAVES.

No.

2

3

Specific

Gravity, °C.

0-8949 @ 17

0-8861 @ 19

0-8S03 @ 23

Rotation,

«D.

+ 11-7

+ 14-1

- 4-5

Refractive

Index, ° C.

1-4747® 19

1-4760® 19

1-4752 @ 19

Ester, per

Cent, by

Boiling.

46-58

41-33

38-6

Ester, per

Cent, in

Cold.

39-4

27-08

—

Yield,

per Cent.

0-168

0-162

0-164

OIL FROM THE FRUITS.

Specific

Gravity, ° C.

0-8797 @ 23

Rotation, Refractive

aD. Index,

D

C.

+ 2-15 1-4744® 23

Ester, per

Cent, by

Boiling.

33-37

Cent, in

Cold.

31-18

Yield,

per Cent.

0-229

CALLITRIS EHOMBOIDEA.
The esters present in the leaf oil—nearly 30 per cent.—consist almost,
entirely of geranyl acetate, borneol and bornyl acetate being almost en-