Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, Stefan Trethan <stefan_trethan@...> wrote:
>
> Strong HCL (or was it H2O2?) will damage HDPE in the long run. The
> plastic becomes brittle from the inside.
> So if you are thinking long term (5+ years) use a glass container.
> 
> Mind that the H2O2 in the mixture will give off oxygen long after
> using it, any glass container should have a pressure relief lid.

Excellent point about the pressure relief lid.  You do NOT want 
your container of etchant exploding due to built up pressure from
the H2O2 decomposing/gassing.

Note that Muriatic Acid releases Chlorine, and Chlorine is the 
universal corrodant.  It will attack most metals, and some plastics
as well.  Note, though, that there are some plastics that 
incorporate Chlorine (or even Fluorine) into their chemical 
composition, and those should be quite immune to the effects of
additional Chlorine.

> ST

Dave