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Formaldehyde releasers….apples…and accumulation and volatility.
Aloha all, and especially Dr @PhilGeis . I was using my valuable time to rewatch a Q & A with Dr Geis & Perry…. and a humor bit has stuck with me for the last three years.
In humor and frustration, Dr Geis referenced a colleague from P&G whom was waxing sad about F releasers, and used the illustration that an apple contains more Formaldehyde than the bottle of X that was preserved with an F releaser. I am not opposed to F releasers in any way shape or form…but I work with a lot of beginners and would like to be a little more knowledgeable on the topic. So here are my questions.
1) Is the apple example actually correct? As a former orchard owner, I am very familiar with the F content of apples. I was just curious about the comparative content. I also realize….that F is not actually directly added into the formula…but components that become F are released over time. At all points in time….does the bottle of X….have less F than an apple?
2) Is the F level in a formula preserved with a F releaser….somewhat stable…or does it increase with time? I guess what I’m really asking….is …. is the F produced…volatile…and leaves the product (via the air) as new F replaces it? Or does the F produced….remain quite stable, slowly adding to F content as the product ages?
3) If the F is volatile….will it effectively function as a head space preservative….on the way out?
Thank you for your time and consideration….and I would love to use the apple example….should it be deemed accurate. ????
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1 Reply
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1) It was a buddy at J&J pissed that activists scared his management into 86ing Dowicil (Quat 15) from their classic baby shampoo.
https://agricultureandfoodsecurity.biomedcentral.com/articles/10.1186/s40066-018-0166-4
and https://www.cfs.gov.hk/english/whatsnew/whatsnew_fa/files/formaldehyde.pdf
2) Levels vary between products and specific FA releasing preservative. On my exp. with Germall, Glydant, Dowicil, the levels of free formaldehyde were 100-200 ppm and steady. Recall EU regs req’d labeling in >500 ppm to folks were careful to test..
3) Formaldehyde is a carcinogen by inhalation so P&G conducted head space and in-shower studies. Don’t recall levels or if there were any but human safety toxicologist were satisfied with safety factor (orders of magnitude v. NOEL).
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