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E-liquid is the mixture used in vapor products such as e-cigarettes [28] and usually contain propylene glycol, glycerin, nicotine, flavorings, additives, and differing amounts of contaminants. [29] E-liquid formulations greatly vary due to fast growth and changes in manufacturing designs of e-cigarettes. [15]
The liquid within the chamber of an e-cigarette is heated to roughly 100-250 °C to create an aerosolized vapor. [4] This is thought to result in pyrolysis of the e-liquid and could also lead to decomposition of other liquid ingredients. [4] The aerosol (mist [5]) produced by an e-cigarette is commonly but inaccurately called vapor. [1]
Electronic cigarettes are marketed to smoking and non-smoking men, women, and children as being safer than cigarettes. [1] In the 2010s, large tobacco businesses accelerated their marketing spending on vape products, [2] [3] similar to the strategies traditional cigarette companies used in the 1950s and 1960s.
The Food and Drug Administration (FDA) on Friday authorized the first ever nontobacco flavored electronic cigarettes for adult smokers, a sign the agency believes some flavors of vaping products ...
The FDA said it authorized four menthol e-cigarettes from NJOY, the vaping brand recently acquired by tobacco giant Altria, which also makes Marlboro cigarettes. The decision lends new credibility ...
Measurable levels of eucalyptol and pulegone were reported in menthol-flavored varieties for all manufacturers. [179] Menthol concentrations ranged from 3,700 to 12,000 μg/g, similar to those reported in traditional cigarettes. [179] Menthol was reported at low concentrations in 40% of the tobacco-flavored nonmenthol products tested. [179]
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Glycerin was long thought to be a safe e-liquid additive. However, formaldehyde is a known product of propylene glycol and glycerol vapor degradation, [15] and may cause lung inflammation. [16] Lipid pneumonia is known to cause lung inflammation, with exogenous and endogenous factors that cause this disease. [citation needed]