Letter 7057

Need product to remove copper oxidation

+

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

+

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, CEF
- Tallahassee, Florida

Dear Reader, please --

Post a question on a different subject.
 
Answer this question (in non-commercial fashion).
 

Legal disclaimer boilerplate button

List of Directories
Jobshops Directory button Environmental Directory button Equipment Directory button Consultants Directory button Chemicals Directory button Test Directory button Help-Wanted Directory button About Advertising button Classifieds Directory button Booklist button

 

Link to Del.icio.us button Save This Page (why?)    -    Home    -    ©1995-2009 finishing.com