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

HomeFAQsSuggested
Books
Help
Wanteds
Advertise
on this site
FORUM
current topics
topic 7057

Need Product to Remove Copper Oxidation


(2001)

I'm a chemical engineering and I work with copper in my job. I need a copper cleaner, a product that removes the superficial oxidation in copper. I have used nitric acid, but the oxidation remain. Thanks

Marcelo Tirelli
- Lorena, Sao Paulo, Brazil


(2001)

If you can handle HNO3 you can probably handle this solution:

120 g/L sodium persulfate

30 mL/L concentrated sulfuric acid

This is actually a copper etch; there will be metal removal and the resultant surface will be active. A benzotriazole or citric acid solution can prevent further tarnishing.

James Totter
James Totter, CEF
- Tallahassee, Florida



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 CURRENT 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


©1995-2018 finishing.com, Inc., Pine Beach, NJ   -   About finishing.com   -  Privacy Policy
How Google uses data when you visit this site.