0 a chemical compound used mainly for making polymers (= chemical substances consisting of large molecules made from smaller molecules) and in food production
Other investigators believe that the incidence of allergic contact dermatitis to propylene glycol may be greater than 2% in patients with eczema.
They are used today for a variety of applications, including automobiles, but gradually being replaced by propylene glycol due to its lower toxicity.
As an alternative, some suppliers will put vegetable glycerin in the e-liquid for those who are allergic (or have bad reactions) to propylene glycol.
Propylene glycol is used commonly used in soaps, and make-up products.
One of its major uses is to control the explosion rate of propylene glycol dinitrate.
E-liquids usually contain a mixture of propylene glycol, vegetable glycerin, nicotine, and flavorings, while others release a flavored vapor without nicotine.
Vaporizers used for delivery of pharmaceuticals or personal care products often include propylene glycol among the ingredients they are filled with.
Propylene glycol can also be converted from glycerol, a biodiesel byproduct.