Home /
Search 🔍
the Site
pub Where the world gathers for
plating, anodizing, & finishing Q&As since 1989


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
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

finishing.com is made possible by ...
this text gets replaced with bannerText
spacer gets replaced with bannerImages

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully 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 might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories:

Chemicals &
Consult'g, Train'g
& Software

About/Contact    -    Privacy Policy    -    ©1995-2023 finishing.com, Pine Beach, New Jersey, USA