Oil of Hemp. Syn. Oleum cannabis, L. From the seed of Cannabis sativa (Linn.), or common hemp. Mawkish. Sometimes used for frying, but chiefly for paints, soaps, &c. Freely soluble in boiling alcohol; does not thicken until cooled to 5° Fahr. Sp. gr. ·9276. Prod. 18% to 24%.
Oil of Jatro′pha. Syn. Oil of wild castor seeds; Oleum jatrophæ, L. From the seeds of Jatropha purgans. Somewhat resembles CROTON OIL. Used for lamps in the East Indies.
Oil, Kundah. Syn. Tallicoonah o.; Oleum touloucounæ, L. From the fruit of Carapa Touloucouna. Rancid, nauseous, vermifuge, rubefacient, emetic, and purgative. Chiefly used in lamps.
Oil, Lard. Syn. Tallow o., Crude olein, C. oleic acid; Oleum adipis, L. By separating the olein of lard from the stearin by means of boiling alcohol. Only applicable where spirit is cheap. The product is, however, excellent. The crude oleic acid, or lard oil of commerce, is chiefly obtained as a secondary product in the manufacture of stearin. It is purified by agitation with sulphuric acid, and subsequently by steaming it, or washing it with hot water. Burns well in lamps, if the wick-tube is kept cool. Sp. gr. ·9003.
Oil, Linseed. Syn. Oleum lini (B. P., Ph. L., E. & D.), L. 1. (Cold-drawn linseed oil;
Oleum lini sine igne.) From the seed of Linum usitatissimum (Linn.), or common flax, bruised or crushed, and then ground and expressed without heat. Pale, insipid, viscous; does not keep so well as the next. Prod. 17% to 20%.
2. As the last, but employing a steam heat of about 200° Fahr. Amber coloured; less viscous than the last; congeals at 2°; soluble in 5 parts of boiling and 40 parts of cold alcohol. Both are drying and cathartic.—Dose, 1 to 2 oz.; in piles, &c. Chiefly used in paints, varnishes, &c. Sp. gr. ·9347. Prod. 22% to 27%.
3. (Boiled linseed oil.) See Oils (Drying).
Oil of Mace (Expressed). See Oil of Nutmeg (Expressed).
Oil of Male Fern. See Extract of Male fern.