This section is from the "A Handbook of Useful Drugs" book, by State Medical Examining and Licensing Boards.
A mixture of hydrocarbons, obtained by distilling off the lighter and more volatile portions from petroleum, and purifying the residue.
Properties : Petrolatum occurs as an unctuous mass, of about the consistence of an ointment, varying in color from white to dark amber.
Action and Uses: Petrolatum is used chiefly as a base for ointments. It is sometimes employed as a lubricant, for which purpose only a sterile product should be used.