Yet another Lie from anti-vapers.
By Michael Siegel
Dr. Siegel is a Professor in the Department of Community Health Sciences, Boston University School of Public Health.
Anti-vaping researchers and anti-smoking groups are now spreading the false information that when heated and vaporized, propylene glycol is converted into propylene oxide, which is recognized as a carcinogen.
For example, the Kenosha Racine and Walworth Counties Tobacco-Free Coalition claims that “Once heated into the vaporized form, propylene glycol is chemically changed into propylene oxide, which is a class 2B carcinogen as rated by the International Agency for Research.”
The problem is that there is something which Dr. Glantz and his colleagues are hiding and which the anti-smoking groups in Kenosha, Racine, and Walworth counties are also failing to reveal:
The “certain conditions” under which propylene glycol can be converted to propylene oxide are quite simple:
A temperature of at least 980 degrees Fahrenheit.
Since propylene glycol boils at 371 degrees Fahrenheit, and since e-liquids are not heated above that temperature (or even close to it), these conditions can never actually be reached in the vaping process. Therefore, it is simply untrue that when heated in a vaping device, propylene glycol is converted into propylene oxide, a recognized carcinogen.