Homebrew PCBs

Stefan Trethan wrote:

> Hi,
> 
> remember the "flip stick" source for CuCl?
> It is simply thrown into the fire and burnt.
> 
> I wonder, would that be a appropriate way to dispose of excess CuCl?
> If one neutralizes the HCl with NaOh or something else, then evaporates  
> the water, and then burns the crystals?
> 
> If flip sticks containing copper cloride are burnt it can't be bad???
> Get rid of the "overgrowth" of CuCl and clean the oven at the same time.
> 
> Any thoughts welcome.
> 


Copper(II) oxide is black/brown powder. You'll get this if you heat 
copper chloride pretty hot. All you do is make the copper insoluble so 
its much less likely to leach in soil.