Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "zl1gbb" <zl1gbb@...> wrote:
>
> Hi
>   I am sure someone can help me. What should I do with chemicals used in making pcb's? I have a winchester of used Ferric Chloride which I would like to safely dispose of. Does this need any treatment and how should it be disposed of?
> 
> Info on any other common chemicals would also be appreciated. Is there a common philosophy such as kill all chemicals etc? 
> 
> Thanks
> Graeme
>


IIRC you can mix it with sodium hydroxide and the nasty stuff will precipitate out, leaving you with saltwater that you can pour down the drain and solid muck you can put in a container and throw in the trash.

Don't pour the FeCl down the drain, with the dissolved copper it's highly toxic, and it will corrode the heck out of any metal fittings or pipe work.