 A sample of the oil obtained by petroleum extraction had a saponification value of 179.1 (generally 190-205), an iodine number of 155.5 (generally 135-165, as low as 114), and a Reichert value of 2.82.The oil acts as a mild cathartic similar to castor oil, while the cake remaining from pressing also acts as a purgative if ingested.The oil typically contains 15% oleic acid, 40% linoleic acid, and less than 30% linolenic acid.