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Starting a CuCl etchant bath without H2O2

2013-07-28 by Philip Pemberton

Here's a slightly odd question... well, it is Sunday night :)

I was thinking about mixing up a cupric chloride etch bath. Thing is,
while I have a ton of concrete cleaner (hydrochloric acid) and raw
copper (in the form of old copper wire), I don't have any hydrogen peroxide.

Now as I understand it, the H2O2 is used as a source of free oxygen to
accelerate the reaction between the HCl and Cu. Out of curiosity, would
it be possible to start a cupric chloride etching bath by bubbling air
through the HCl while adding copper (possibly heating the HCl to
accelerate the reaction)?

--
Phil.
ygroups@...
http://www.philpem.me.uk/

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