Emulsio Olei Terebinthinae (N. F.)—Emulsion of Oil of Turpentine.
Oleum Terebinthinae (U. S. P.)—Oil of Turpentine
Preparation.—Formulary number, 132: "Oil of turpentine, twelve and one-half cubic centimeters (12.5 Cc.) [203♏︎]; acacia, in fine powder, two grammes (2 Gm.) [31 grs.]; yolk of egg, fifteen cubic centimeters (15 Cc.) [243♏︎]; aromatic elixir (U. S. P.), fifteen cubic centimeters (15 Cc.) [243♏︎], cinnamon water (U. S. P.), a sufficient quantity to make one hundred cubic centimeters (100 Cc.) [3 fl℥, 183♏︎]. Triturate the acacia with the yolk of egg then add the oil of turpentine very slowly, continuing the trituration, and finally add the aromatic elixir, and enough cinnamon water to make one hundred cubic centimeters (100 Cc.) [3 fl℥, 183♏︎], in the same manner"—(Nat. Form.).
Emulsion of oil of turpentine, or any volatile oil, may also be prepared according to the following general formula: "Volatile oil, twelve and one-half cubic centimeters (12.5 Cc.) [203♏︎]; acacia, in fine powder, six grammes (6 Gm.) [93 grs.]; syrup, twenty-five cubic centimeters (25 Cc.) [406♏︎]; water, a sufficient quantity to make one hundred cubic centimeters (100 Cc.) [3 fl℥, 183♏︎]. Pour the volatile oil into a dry bottle, and, having corked the latter, agitate it so that the inner surface maybe completely wetted by the oil. Then add the acacia, and shake again. Finally add the syrup, and enough water to make one hundred cubic centimeters (100 Cc.) [3 fl℥, 183♏︎], and mix thoroughly. Note.—If this general formula is applied to emulsion of oil of turpentine, and a product similar to that obtained by the first formula is desired, the syrup should be replaced by aromatic elixir, and the water by cinnamon water. If a so-called "emulsion" of a volatile oil is to be made more permanent, this may be accomplished by incorporating with it a small portion of some bland fixed oil, such as expressed oil of almond. Usually, 1 volume of the fixed oil will be sufficient for 2 volumes of the volatile oil. In this case the mixture should be made in a mortar, by trituration, and under observation of the rule laid down in general formula for emulsions (F. 123)"—(Nat. Form.).
