Hydrogen Peroxide

[Linas Kudzma <lkudzma@earthlink.net>]

High concentration hydrogen peroxide should not be heated. It is unstable
and liberates oxygen (needs a vented bottle). As stated below, it is a
strong oxidizer and can start fires in contact with flammable material.
Hence, the smoking floor.

Handle this stuff with great care, and refrigerate in a vented bottle when
not working with it.

----- Original Message -----
From: "Jonathan Bailey" <quryhous@midcoast.com>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Tuesday, May 21, 2002 9:36 PM
Subject: RE: mordancage


> Hi Chris-
>
> > You ain't a kiddin!  My 135 volume bottle does not stand upright well
> > because the bottom bulges out from expansion.  I have a question:  is it
> > safe to heat the hydrogen peroxide, I wonder, in a microwave?
>
> NO WAY JOSE!!!!!!  I think this is a decidely BAD idea!!!  I have no
> first-hand knowledge - but "even" 40 volume is considered by many shippers
> as bomb grade!  I wouldn't heat it at all!!  Why do you want to?!?
>
> One of the faculty at The Maine Workshops who studies with Sudre told me a
> few years ago that she went into her attic darkroom on very hot summer day
> and the H2O2 had leaked out of the gallon jug onto the plywood floor - and
> it was *smoking*!
>
> H2O2 is an oxidizer - fire is an oxidation process.... she store the stuff
> in the cool basement now (and so do I!!!)
>
> Informed persons on this list may know better - or more than I do, and I'd
> be happy to hear from them on this topic.  For now, I'd err on the side of
> caution!
>
> be careful!
>
> Jon
>