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Specialty Chemistry Forums => Chemical Engineering Forum => Topic started by: josey.mathew on December 18, 2007, 10:37:45 PM

Title: Ferric Chloride reuse
Post by: josey.mathew on December 18, 2007, 10:37:45 PM

Hi everyone,

I have been using ferric chloride to etch some copper i.e. to remove copper from certain sufaces.
Now my question is can i reuse the ferric chloride i.e. by some process of distillation or electrolysis i should be able to remove the copper in the solution and reuse the ferric chloride. How can i do this ???
thanks for your help.

Title: Re: Ferric Chloride reuse
Post by: Borek on December 19, 2007, 03:47:19 AM

I believe it was discussed on forums, do the search.

Title: Re: Ferric Chloride reuse
Post by: josey.mathew on December 19, 2007, 08:05:46 AM

thanks got the link
here it is
http://www.chemicalforums.com/index.php?topic=15902.msg59386

Title: Ferric Chloride reuse
Post by: josey.mathew on January 02, 2008, 03:00:57 AM

hi
I have one more doubt.
The copper layer quickly oxidises after the print is removed. How can i prevent this ? I have heard that varnish is good but which one??

One more thing is when we buy a copper laminate the copper layer is nice and shiny and it doesnt oxidise. How can i obtain the same finish after etching ??