finishing.com -- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing

HomeFAQsBooksHelpWantedAdvertiseForum
topic 11256

What is a cheap source for a stripping chemical?


 

To anyone that can help. I am very interested in removing gold from chips and circuit boards, and then refining it myself, where can I get some more information on what chemicals to use to strip the gold from the boards. As I find most of the companies chemicals too expensive because of the Haz-Mat charges. I am also willing to pay a fee to anyone that can supply me with this information.

Thanks a lot and happy prospecting.

Dale Baird
- Connellsville, Pennsylvania


 

You can strip gold with cyanide, but that's out of the question in a non-industrial environment. You can strip it with aqua regia, but that's out of the question in a non-industrial environment. Your final choice is some kind of complexor, perhaps citric acid based, but you would have to do a good literature search to find any articles on this as a starting point, and then you'd still be a long way from a real solution.

As for paying fees, you should probably do that for anyone who can point you to O-L-D electronics where the gold plating thicknesses were probably ten to twenty times what they are today.

Ted Mooney, finishing.com Teds signature
Ted Mooney, P.E. RET
finishing.com
Pine Beach, New Jersey



This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Q or A to THIS thread START a NEW THREADView This Week's HOT TOPICS

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices


©1995-2017 finishing.com     -    Privacy Policy
How Google uses data when you visit this site.