Oil, Shark-liver. The lightest of the fixed oils. Sp. gr. ·865 to ·867.
Oil, Skate. Syn. Oleum ralæ, L. From the livers of Raia batis (Linn.), or common skate, as cod-liver oil; also from Raia rhinobatus, or white skate, and Raia clavata, or thornback. Often sold and mixed with cod-liver oil.
Oil, Spermace′ti. Syn. Sperm oil; Oleum cetacei, L. From the ‘head matter’ of Physeter macrocephalus, or spermaceti whale; a species once common in all the principal seas, but now chiefly confined to the Southern Ocean. It is very limpid, smells little, and burns well; and has long been reputed the best oil for lamps and machinery, as it does not thicken by age or friction. It is frequently adulterated with refined seal oil. Sp. gr. ·875.
Oil, Sun′flower. Syn. Oleum helianthi, L. From the seeds of Helianthus annuus and H. perennis. Clear, pale yellow, tasteless; thickens at 60° Fahr. Used for salads and lamps. Sp. gr. ·9261. Prod. 15%.
Oil, Teel. See Oil, Gingelly.
Oil, Tobac′co-seed. Syn. Oleum tabaci (expressum), L. From the seeds of Nicotiana tabacum (Linn.), or true tobacco plant. Pale; dries well; equal to nut oil. Its production has recently been carried on with considerable success in some parts of Russia. Sp. gr. ·9232.
Oil of Touloucou′na. See Oil, Kundah.
Oil, Train. See Oil, Whale.
Oil, Wal′nut. Syn. Oleum juglandis, O. nucis j., L. From the kernels of the nuts of Juglans regia (Linn.), or common walnut tree. Soon gets rank; dries well. Used in paints, and occasionally in plasters. When ‘cold drawn’ and washed it is sometimes eaten with salad. Sp. gr. ·9260 to ·9262. Prod. 48% to 52%.
Oil of Wax. Syn. Butter of wax; Oleum ceræ, L. From beeswax, by quick distillation in a close vessel. Butyraceous. By rectification along with quicklime it yields a liquid oil.