OIL OF JUNIPERUS OXYCEDRUS WOOD
Juniperus oxycedrus is the juniper which furnishes the wood from which
the tarry empyreumatic oil, known as cade oil, is obtained by destructive distillation.
Huerre2 has submitted the same material, suitably comminuted, to
ordinary steam distillation. The essential oil thus obtained comes over very slowly;
the yield varies from 1,6 to 3,4 per cent. The higher yield was obtained from
the autumn cut wood. The oil is a dark yellow viscous liquid ; having the
following characters :
Specific gravity: 0,915 to 0,927
Optical rotation: - 31°42'
At normal atmospheric pressure it boils
between 260° and 300° C. Soluble 1 : 1 in 95 per cent, alcohol, and 1:12 in 90
per cent, alcohol. On rectifying the crude oil in a current of steam, under
reduced pressure, 70 per cent, of the original oil distilled as a bright yellow
liquid with a penetrating odour; it was much less viscous than the original
oil. The residue (30 per cent.) was very viscous, dark in colour, and had a
feeble sweet odour.
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2 Jour.
Pharm. Chim. (1915), 12, 273.
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