Propylene glycol: Propylene glycol (PG) or propane-1,2-diol, also called 1,2-dihydroxypropane or methyl glycol, is a diol with the chemical formula CH3–CHOH–CH2OH having many industrial or agropharmaceutical uses, with low dose as a food additive and recently in electronic cigarettes (vaping liquid).
Propylene glycol is obtained from the reaction of propylene oxide with water to form monopropylene glycol (MPG), subsequent reactions produce...
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