> The oxalic acid desublimes to a fog of oxalic acid crystals the instant
the temp drops a bit and that is within an inch or less of the sublimer as
near as I can tell.
Agreed. I'm done some experimentation to quantify the amount of OA that
degrades due to heat. I use mylar balloons -- injecting the exiting vapor
directly into the balloon. There is initially zero inflation of the
balloon from the blast of "vapor," since the vapor immediately condenses
into a fog of crystals. It's not until the temperature of the vaporizer
exceeds 190C that the balloon starts to inflate, presumably from the
degradation products CO2 and formic acid.
I just purchased a bunch of mylar balloons and a microscale to pursue this
avenue of research.
--
Randy Oliver
Grass Valley, CA
www.ScientificBeekeeping.com
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