An essential oil from the seeds of Perilla ocimoides. The yield is from 33 to 35 per cent., the oil being of a greenishyellow or brownish colour. It has a sp. gr. 0932 to 0945, saponification value about 192, iodine value 187 to 202, and refractive index 1484. It is soluble in alcohol and ether, and is used as a substitute for linseed oil in making varnishes, and to some extent as an edible oil in Japan and China. The oil from P. nankinensis is stated to result from the decomposition of a glucoside in the leaves, and to contain 20 to 30 per cent, limonene, 44 to 57 per cent, perillic aldehyde, ar.d some pinene.
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