Education, Aloha, & the most
fun you can have in finishing
World's top finishing resource since 1989
Chime right in - No login req'd
Organic removal from gold
I am wanting to clean any organics inside of a gold metal package. I was curious if H2SO4:H2O2 will react to the gold along with a step2 clean NH4OH:H2O2.
electronics mfgr. - New York, New York, USA
Cyanides and aqua regia (a mixture of hydrochloric and nitric acid) are about the only chemicals that attack gold. Not so if the gold is thin and porous. Then, any chemical that attacks the substrate will pass through the pores and lift the gold layer.
Monterrey, NL, Mexico
this text gets replaced with bannerText
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: