4 replies to this topic

[leosedf]

Hello!
When i etch PCB's with ferric chloride, after the reaction with copper is completed i'm left with a copper chloride solution.
Anyone knows how to extract and purify this copper chloride compound?

Thank you

[whoof]

Well if you add copper unti exhausted the copper chloride should precipitate.
Left for week(s) in a undisturbed glass bottle a brown precipitate forms at the bottom with a dark green solution above.

[leosedf]

I presume the green precipitate is the copper chloride solution.

Thank you for your answer

[whoof]

I presume the green precipitate is the copper chloride solution.

Thank you for your answer

Sorry ive just realised the bottle i was looking at had neutralising powder added so brown precipitate was iron carbonate.

However the theory still holds for non neutralised solution , just check that the precipitate is green in colour.

http://artmondo.net/...cles/ferric.htm

Do not expect much yield however, some improvement can be had by evaporation to reduce water content.

Edited by snert, 28 August 2011 - 01:09 PM.

[leosedf]

I'll try that to see how much i can obtain.
Thank's.