This section is from the book "Materia Medica Pharmacy, Pharmacology And Therapeutics", by W. Hale White. Also available from Amazon: Materia Medica Pharmacy, Pharmacology And Therapeutics..
Petrolatum Liquidum. Liquid Petrolatum.
A mixture of Hydrocarbons, chiefly of the Marsh-gas series, obtained by distilling off the lighter and more volatile portions from Petroleum, and purifying the residue when it has the desired consistence.
A colorless, or more or less. yellowish, oily, transparent liquid, without odor or taste, or giving off, when heated, a faint odor of Petroleum. Sp. gr., about 0.875 to 0-945- Solubility. - Insoluble in water; scarcely soluble in cold or hot alcohol, or in cold Absolute Alcohol; but soluble in boiling Absolute Alcohol, and readily soluble in Ether, Chloroform, Carbon Disulphide, Oil of Turpentine, Benzin, Benzol, and fixed or volatile oils.