this post was submitted on 18 Dec 2025
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me_irl
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Is paracetic acid that safe?
The dose makes the poison. At the concentrations you’d get from household precursors, it would be fine.
Now, take glacial acetic acid and treat it with high-concentration peroxide? Now you’ve got something there. But most people don’t have easy access to either.
I pick up high concentrated hydrogen peroxide (35%) at my local farm supply store all the time. It's good for dealing with pests on my plants. No idea where I would get the concentrated acid though.
You can easily buy concentrated acetic acid that is intended to be diluted for use on food
Not sure how safe it would be if you accidentally mix it in a closed room
Probably better to at least have the window open
We’re ranking danger here. I’d much rather be in the room with dilute peroxide and vinegar than with chloramine or chlorine.