Oleum Terebinthinae Rectificatum. U. S., Br. Rectified Oil of Turpentine.

Ol. Tereb. Rect. [Rectified Turpentine Oil]

Related entry: Riga balsam - Rosin - White Pine Bark - Oil of Turpentine

"Rectified Oil of Turpentine is the oil distilled from the oleo-resin (turpentine) obtained from various species of Pinus, and rectified." Br.

Essence de Terebenthine purifiee, Fr.; Oleum Terebinthinae Rectificatum, P. G., Gereinigtes Terpentinöl, G.

"Oil of Turpentine, a convenient quantity; Solution of Sodium Hydroxide, a sufficient quantity. Shake the oil of turpentine thoroughly with an equal volume of solution of sodium hydroxide, and introduce the mixture into a still connected with a well-cooled condenser. Recover about three-fourths of the oil by distillation, separate the clear oil from the water, dry it by shaking with anhydrous calcium chloride, filter and preserve. Keep the product in well-stoppered, amber-colored bottles, in a cool place. Rectified Oil of Turpentine is to be dispensed when oil of turpentine is required for internal use." U. S.

When oil of turpentine is distilled in contact with sodium hydroxide solution, the distillate comes over purified and freed from the decomposition products which give the commercial oil the disagreeable odor and taste which are inseparable by ordinary distillation without alkali; hence this rectified oil is much preferable for internal administration. In the U. S. P. VIII and IX solution of sodium hydroxide was preferred to lime water, which was used in the U. S. P. 1890 to furnish an alkali to combine with resinous substances in commercial oil of turpentine. It has in other respects the same properties as Oleum Terebinthinae. "Rectified Oil of Turpentine is a colorless liquid which conforms to the properties and tests under Oleum Terebinthinae, specific gravity excepted. Specific gravity: 0.856 to 0.865 at 25° C. (77° F.). Evaporate 5 mils of the Oil rapidly in a tared dish on a water bath; not more than 0.015 Gm. of residue remains. U. S.

"A colorless, limpid liquid. Characteristic odor; taste pungent, somewhat bitter. Specific gravity 0.860 to 0.870; refractive index at 25° C. (77° F.) 1.465 to 1.480. Distils almost entirely between 156° and 180° C. (312.8 and 356° F.), leaving no appreciable residue." Br.

Dose, five to ten minims (0.3-0.6 mil).

Off. Prep.—Emulsum Olei Terebinthinae, U. S.; Linimentum Terebinthinae, Br.; Linimentum Terebinthinae Aceticum, Br.

The Dispensatory of the United States of America, 1918, was edited by Joseph P. Remington, Horatio C. Wood and others.