https://www.selleckchem.com/pr....oducts/szl-p1-41.htm
Up to 95% of the liquid volume in an e-cigarette consists of propylene glycol. Previous research has shown that propylene glycol can generate diacetyl and formaldehyde when heated. New research shows that propylene glycol can also generate methylglyoxal, an alpha di-carbonyl compound recently shown to cause epithelial necrosis at even lower concentrations than diacetyl, the flavoring chemical associated with bronchiolitis obliterans ("Popcorn Lung". We analyzed chemical emissions from 13 JUUL pod flavors. Diacetyl and methylglyoxal w
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