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 persulphate
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
[adv: item on
or citric acid [on
Amazon affil link] solution can prevent further tarnishing.
James Totter, CEF - Tallahassee, Florida
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