150 THE CHEMISTRY OF ESSENTIAL OILS
To 100°
194° to 195°
195° „ 196°
196° „ 200°
200° „ 206°
ResiduePer Cent.0-5
38-0
39-0
16-0
4-0
2-5
Specific
Gravity.0-8625
0-8638
0-8660
Rotation.- 15° 48'
- 16" 20'
- 14° 32'
- 11° 50'
A sample having the following characters has been fractionated by
J. C. Umney
l
:—
Specific gravity 0-875
Optical rotation - 13°
Refractive index 1*4630
Esters 2-6 per cent-
Total alcohols 53-7 „
The fractionation results were as follows :—
No.1 2 3 4 5 6 7
Per Cent.10
10
10
20
20
20
ResidueSpecific
Gravity.0-869
0-870
0-870
0-870
0-870
0-870
0-873
Rotation.-15°
- 15° 30'
- 15° 30'
- 16°
- 15°
- 14° 30'
—
Refractive
Index.1-4615
1-4620
1'4624
1-4630
1-4632
1-4642
1-4726
OIL OF MASSOI BABK.
This oil is distilled from the bark of Massoia aromatica, a tree found
in New Guinea, in which it occurs to the extent of 6 to 8 per cent.
Woy,
2
who investigated the oil, states that it contains a considerable
quantity of eugenol, with some safrol, a body resembling creosote, and
traces of free acetic acid. It is however, doubtful, whether the so-called
massoi bark of commerce ever consists of one kind of bark only. It is
possible that the principal compound of the commercial bark is that of
a species of cinnamon. He also claimed that it contains a terpene not
identical with any already known hydrocarbon. Wallach
3
has, however,
shown that this body is a mixture of the terpenes pinene and limonene,
with perhaps, some dipentene. The oil is a clear yellow liquid of clove-
like odour of specific gravity 1'040 to 1065, and refractive index about
1-5400.
Schimmel & Co.^4 obtained 82 per cent, of oil from the bark having the
following characters :—
Specific gravity 1-01695
Optical rotation-f-+ 1° 45'
Refractive index 1-52535
!
P. and E.O.R. (1910), 33.
2
Arch, der Pharm., 223 (1890), 22, 687.
3
5 Annalen,^258 (1890), 340.^4 Bericht, 1917, 33.
This is the figure given in Messrs. Schimmel & Oo.'s Bericht, but it appears
incompatible with the presence of 85 per cent, of eugenol, and is possibly a misprint
for 1-0469.