<div dir="ltr">The way I read that article, the primary risk is if you were to heat or attempt to distill the alcohol with the peroxides present.<div><br>That said, a little caution goes a long way.<br><br>Pete</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, Jul 1, 2023 at 2:35 PM Eric Brombaugh via Synth-diy <<a href="mailto:synth-diy@synth-diy.org">synth-diy@synth-diy.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hey folks,<br>
<br>
As electronics hobbyists a lot of us will have isopropyl alcohol (IPA) <br>
around for cleaning circuits and mechanisms. It's come to my attention <br>
that anhydrous (>99%) IPA left standing for more than a few months is <br>
prone to forming peroxide crystals that are unstable and potentially <br>
explosive. Dilute IPA such as what you'd buy at the drug store (70%-90%) <br>
is safe, but the jug I got at the hardware store is 99% so be aware of <br>
what you've got lurking in the cupboard. I checked my stash and poured <br>
in some distilled water just to prevent worries.<br>
<br>
More info on that here:<br>
<a href="http://www.sciencemadness.org/talk/viewthread.php?tid=21495" rel="noreferrer" target="_blank">http://www.sciencemadness.org/talk/viewthread.php?tid=21495</a><br>
<br>
Eric<br>
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