Petrolatum - chemistry.
Publié le 11/05/2013
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Petrolatum - chemistry. Petrolatum, odorless, tasteless, greasy substance, obtained as the residue from petroleum after the lighter and more volatile components have been boiled off. The purified residue is obtained in the form of a yellowish or decolorized semisolid, known as petroleum jelly, or by various trademark names, such as Vaseline, and in the form of a clear to faintly yellow liquid, known as mineral oil. The semisolid form is used as an unguent and as a base for pharmaceutical ointments; the liquid form is used as a laxative. Microsoft ® Encarta ® 2009. © 1993-2008 Microsoft Corporation. All rights reserved.
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